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Tire Pressures

Yahoo Message Number: 644
My new Intrigue '01 had tire pressures of 120 in front and 110 in rear, as well as tire pressure instructions plate in the vehicle indicated thesame maximum weights.

I weighed the vehicle and applied those weights to the Toyo booklet weight/pressure chart and discovered that I should be using 75 and 85 pounds of pressure which I changed to. was told at the recent 2000 reunion that the reason the factory inflates the tires to maximum pressure allowed is that they assume every new owner will overload their vehicle and thus they have them inflated to the maximum as a CYA.

Re: Tire Pressures

Reply #1 –
Yahoo Message Number: 645
Saw your note about tire pressures...............
Are you sure about 75 and 85 lbs pressure? I used to have an Intrigue 1999 and that seens to be low to me. My 99 --40' required higher pressures than your are quoting. But they may have changed the tires. I always try to run my tires just a bit higher than required. Yes it does give you a ride that is a little "harsher" or not a smooth as the lower pressure. But the tires run a bit cooler and I think that is a little safer. I've weighed my coach at the rallys using "Aweigh We Go" (sp?) and found them to be very accurate and provide good advice.

I also agree with the CYA perspective about listing the max. pressure on the posted stickers in the coach. Unfortunately there are too many RVrs out there who simply don't monitor tire pressure or do it in a hap-hazardly manner.
Den

Re: Tire Pressures

Reply #2 –
Yahoo Message Number: 646
In 16c.6f717c.28c9696a@...>, on 09/07/01 at 09:39 AM, dennyzarnt@... said:
Also remember that the axle weight for calculating tire pressures should be determined by weighing both ends of the axle and doubling the max of the two. This can be significantly different from the actual total weight on the axle, particularly in galley slide coaches.

Quote
>Saw your note about tire pressures...............
Are you sure about 75 and 85 lbs pressure? I used to have an Intrigue >1999 and that seens to be low to me. My 99 --40' required higher >pressures than your are quoting. But they may have changed the tires.
I always try to run my tires just a bit higher than required. Yes it >does give you a ride that is a little "harsher" or not a smooth as the >lower pressure. But the tires run a bit cooler and I think that is a >little safer. I've weighed my coach at the rallys using "Aweigh We Go" >(sp?) and found them to be very accurate and provide good advice.
>I also agree with the CYA perspective about listing the max. pressure on >the posted stickers in the coach. Unfortunately there are too many RVrs >out there who simply don't monitor tire pressure or do it in a >hap-hazardly manner.
Den

--

jim.ott@...

Re: Tire Pressures

Reply #3 –
Yahoo Message Number: 654
Quote
"the factory inflates the tires to maximum pressure allowed is that
they assume every new owner will overload their vehicle and thus
they have......"

I bought a new '99 Intrigue with slide. I was later informed by CC that the units had been delivered with low tire pressure at 85 psi.
I was to inflate the tires to 125 psi asap. As I was doing this I noticed that the tire on the drivers side (slideout) was starting to separate. My mechanic told me not to drive it. CC replaced both front tires and I kept the tires at 120 psi from then until I traded it in. I would be careful driving with tire pressures below 100 psi. rvhfy in NM.

Re: Tire Pressures

Reply #4 –
Yahoo Message Number: 678
I agree! We were complaining about the poor tracking of our 2001 Intrigue and someone said to make sure our tires were properly inflated for our weight. Well, that forced us to weigh the coach (we were waiting until we had ALL our stuff in it) and we found that as with your experience, the dealer had put way too much air in the tires. We're now running them at 85-90 and it rides amazingly different. We doublechecked with the fellow at Toyo who had written up the specs in fact and he agreed with the proper weights after I read him off our 4 wheel weights.

We wrote CC about the fact they needed to let their sales force know about proper tire inflation since it made a HUGE difference in the handling of the coach.
Jan

Re: Tire Pressures

Reply #5 –
Yahoo Message Number: 679
I was pressuring my tires to 85 psi in 1999 Intrigue dinette slide 36' and had about 1% margin. Increased to 95psi cold. Since have installed Smartire and it is interesting to see how much tires heat up at 95 psi. I tend to think using load tables vs pressure is not as important as preventing excessive tire heating with lower pressures even if they meet the load requirements.

Sincerely,

gwb36@... Cincinnati Ohio

1999 Country Coach Intrigue with BMW F650 motorcycle

Re: Tire Pressures

Reply #6 –
Yahoo Message Number: 681
George, I've got to agree with you, I have the tire sensor accessory in the coach and am amazed at the temperatures you can get to. I even had one of the tires set off the high temperature gauge on a real hot day. Inner tires are always higher than outers. Jan, your tire pressure sounds a bit low.

Re: Tire Pressures

Reply #7 –
Yahoo Message Number: 687
In 9pn87d+257h@...>, on 10/08/01

at 02:18 PM, janreed1@... said:
Just make sure that you weigh all 4 corners. The proper axle weight is determined by doubling the larger of the two weights at the end of each axle. For many slide-out coaches there can be a significant difference between the value calculated this way and the weight that you get when you just weigh the entire axle.

CC had a major recall related to the fact that the left front axle weight on slide-out coaches required very high tire pressure in the left front tire.

Quote
>I agree! We were complaining about the poor tracking of our 2001 >Intrigue and someone said to make sure our tires were properly inflated >for our weight. Well, that forced us to weigh the coach (we were waiting >until we had ALL our stuff in it) and we found that as with your >experience, the dealer had put way too much air in the tires. We're now >running them at 85-90 and it rides amazingly different. We doublechecked >with the fellow at Toyo who had written up the specs in fact and he >agreed with the proper weights after I read him off our 4 wheel weights.

We wrote CC about the fact they needed to let their sales force know >about proper tire inflation since it made a HUGE difference in the >handling of the coach.
Jan

Re: Tire Pressures

Reply #8 –
Yahoo Message Number: 690
Yes, my inner tires tend to run hotter also....I have a 01 Affinity.
In a prior note, someone indicated that they were now not too concerned about the correct pressure since it rose so quickly. That is deceivingly dangerous!!!. If a tire is inflated too low it will increase both the pressure and temp once it is rolling down the road. The problem is that if the load is too much for the selected pressure, the tire will get too hot and rupture!!!! The problem with trying to watch these temps and pressures is that the are impacted greatly by the outside temp, rain, and speed. But the rule to remember is lower pressure, the higher the temp.
Den

Re: Tire Pressures

Reply #9 –
Yahoo Message Number: 876
How would you describe the before and after driving characteristics of your tire pressure change?

I just picked up a 2002 36' Allure (Summit). Factory said (and set) the front tire pressures at 120 psi and the rear around 110 psi. It seems that they just picked the highest pressure for 12R22.5 Dual and Single H ratings of the Toyo tires.

4 point factory weights are: LF4706, RF 4788, LR 9522, RR 8599).
Therefore LR is 4761 per tire and RR is 4300 per tire.

Since we have not added much weight to the coach -- only what could fit in the trunk and back seat of a rental car -- I am expecting that the rear should be set to 70 or 75 psi (4780 or 4990/tire), and the front at 75 or 80 (5200 or 5450/tire) -- and then doing another weighing and tire pressure setting after I fully stock the rig.
Should I dump 40 psi out of the front tires, or take it down in steps of 10 psi?

The SmartTire units show about a 5-7 degree rise (with the inside duals showing a greater rise as I am told is expected).
Do coach owners add valve extensions to the inside duals? I have not figured out where the valves are yet.

Herb

Re: Tire Pressures

Reply #10 –
Yahoo Message Number: 877
Hi Herb,

I have a 1998 Intrigue. I have tried both high (around 115psi) and low (around 90psi) in the front tires. The 90 psi is what was recommended for the weight I carry on the front tires (Aweigh we go-4 point analysis). I am much happier with the 115 pressure because the outside tread of my right front tire wears excessively if I use the lower (recommended) weight. I must admit I am not a tire expert...far from it... but I know from practical experience on my coach that the tires will last longer if I use the higher weight. I think I have heard others say about the same thing on this forum, but cannot say that for sure. I suppose you get a slightly rougher ride, but frankly, I, personally, have not noticed a great difference in ride characteristics.
You may want to get some more input from others on this forum, but based on my experiences over the past 4 years the higher pressure is better for my particular coach. George PLEASE NOTE: Please use the gch@... email address for all future correspondence to both Gini and George. Mail specifically for Gini can be addressed to haylesg@... since Gini monitors that account for messages.

Re: Tire Pressures

Reply #11 –
Yahoo Message Number: 878
Oops, correction about smarttire reading. I said temp show 5-7 degree rise, I meant PRESSURE (when warm). As I recall, the tire temp will heat to about 100 degrees (on a 45 degree day) (will check again). What is the max heat rise (cold to hot) that is okay? Or is it max tire temp that I am concerned about? Is it only considered a problem on a hot day?

Looking forward to you comments.
Herb

Re: Tire Pressures

Reply #12 –
Yahoo Message Number: 879
Make sure you check your charts carefully, before reducing the air pressure.
The numbers you quote seem a little low to me, but I don't have charts in front of me. I have subcribed to the philosophy that a "few" extra pounds of air might give you a slightly firmer ride, BUT the extra air pressure is a good trade-off to insure that the tires don't over heat don't cause unneeded tire edge wear. If the tires are much too high, you'll get less rubber traction on the road & higher center wear plus an unusually firmer ride.
Take you time in reducing the pressure and weight you coach after it is fully loaded for a trip, you may be surprised at how much just a few of the misc. grocery, clothes, etc. items weigh. If you get a chance, try to attend one of the tire seminars at an upcoming rally------some good info can be found there.

best of luck.

Re: Tire Pressures

Reply #13 –
Yahoo Message Number: 880
Last summer out it the AZ desert, my tire temps climbed up to over 160 degrees. I found that by slowing down the temp decreased a few degrees. I have not read anything thing in the Smart Tire documentation about upper temp limits -- etc.

Anybody have any authoritative info on the subject????

Den

Re: Tire Pressures

Reply #14 –
Yahoo Message Number: 881
I just wanted to note that on the Allure the tire size changed somewhere between 1998 and 2002, so what might be appropriate for a 1998 model may not be good for the 2002.
Not sure but I think there was a tire change on the Intrigue also.

David

Re: Tire Pressures

Reply #15 –
Yahoo Message Number: 882
I also know that the coach went to independent front suspension sometime between 2000 and 2002. These tires are 12R22.5 Load Range H (appears to be available F G & H load ranges per the Toyo RV Truck Tire user guide). H Single Axle is 7200/single tire and 6320/dual tire.

Being new to motorhomes (vs travel trailers) these tire are huge IMHO.

:-)
Herb

2002 Allure Summit

Re: Tire Pressures

Reply #16 –
Yahoo Message Number: 884
1997 Allure & Intrigue used a Toyo 10R / 22.5 tire with a solid front axle.
1998 & 1999 Allure & Intrigue used a Toyo 275 /70R/ 22.5 tire with a solid front axle.
Early 2000 Allure & Intrigue used a Toyo 275 /70R/ 22.5 tire with Independent front suspension.
Late 2000 Allure & Intrigue used a Toyo 12R / 22.5 tire with Independent front suspension. In order to accomodate this mamoth tire CC changed the main chassis rail from a 3" by 3" to a 3" by 6". So if you see a 2000 model year Allure or Intrigue with a 275/70R/22.5 Toyo tire it is an early model with a 3" by 3" frame rail. If it has a 12R / 22.5 Toyo (considerably larger in diameter) then it is a late 2000 with a 3" by 6" frame rail.
2001 & 2002 Allure & Intrigue still used a Toyo 12R / 22.5 tire with Independent front suspension.
On a "late" 2000 Allure or Intrigue 36' coach with 12R / 22.5 tires I have found 95 to 100psi rear tire pressure cold and 105 to 110 front tire pressure cold to be in accordance with the Toyo tire chart. Every coach is going to be different depending on the load, in your brown file folder you should have a Toyo brochure/booklet that has a tire chart. Ultimately one would want to have there coach loaded and ready for use, fuel filled, water filled, and even some liquid in your tanks (worst case scenario). Then get your coach 4 corner weighed, use the heavier weights, and then refer to yoru tire chart for proper inflation.
Herb, you are driving my favorite coach. I love that 36' size in the Allure or Intrigue, the manueverability is amazing and its a little rocket.

Good Luck,

Damon

Re: Tire Pressures

Reply #17 –
Yahoo Message Number: 887
Hi Damon, My Intrigue 11062 has the larger tires. It was built in December 1999.

Did the first Intrigue on the market have serial number 11000 or was there some prior numbering system?

David

Re: Tire Pressures

Reply #18 –
Yahoo Message Number: 888
I will have to look at work tomorrow, however a 12R/22.5 tire will not fit on a 3" by 3" frame, it will rub so I am sure you have the 3" by 6" frame rail.

Damon

Re: Tire Pressures

Reply #19 –
Yahoo Message Number: 889
Quote
Did the first Intrigue on the market have serial number
11000 or was there some prior numbering system?
David, I'm not sure what you mean by this note, but our Intrigue is 10678. It is a 1998, but made right about model change to 1999.

Linda & Don

Re: Tire Pressures

Reply #20 –
Yahoo Message Number: 893
Don;t know but mine is #11262 and it is a 2001? Suspect CC can answer the question Don as know they get a copy of all of these.

Re: Tire Pressures

Reply #21 –
Yahoo Message Number: 894
Herb. Les Schwab people in Bend Oregon told me that 22.5 size tires on my Intrigue can heat up to 200 degrees before I have to start worrying. Have not seen any temp like that yet. I find that the inboard duals run hotter (6 to 10 degrees) than the outer ones. Anyone else have any input on this subject.

regards ron

Re: Tire Pressures

Reply #22 –
Yahoo Message Number: 897
Quote
Did the first Intrigue on the market have serial number 11000 or >was there some prior numbering system? >

David
The First few Intrigues actually had a 5### number, I believe there were 4 or 5 of these. After those, since it was a new model type, CC started a new number series starting at 10000

Tire Pressures

Reply #24 –
Yahoo Message Number: 20365
Hi all. I recently purchased a 2005 Inspire. I am currently on my first rode trip in 1000 trails at Tawakoni Lake Tx., and noticed that I need to put air in my tires. I noticed on the tires it states 120 psi as the max. pressure. My coach is pretty well loaded. Is it necessary for me to weigh the coach or should I balance all the tires to the 120 max pressures stated on the tires and rims. Please help.

Bill & Susan
Inspire 40514