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How fast do you drive your coach?

Yahoo Message Number: 14952
The sign on the shifter console says our coach is rated to 65mph.
That's about as fast as we have been driving it with occasional bursts to 70 or so for passing. At around 65mph the coach seems to have either a bounce in the suspension or tires out of balance.
The condition is not constant and I can't really tell how bad the roads are becuase I haven't driven them in something other than the coach. However, slowing down seems to make the bounce less noticable. Just wanted your thoughts before I add this to my fix list.

Bob and Gloria

'05 Intrigue LE 42' #11872

Re: How fast do you drive your coach?

Reply #1 –
Yahoo Message Number: 14953
The bounce could be your shocks; had to have mine adjusted for the same reason. Other experts should speak to the tire issue.

Carol

04 Inspire 51046
:

Quote
>

The sign on the shifter console says our coach is rated to 65mph.
That's about as fast as we have been driving it with occasional > bursts to 70 or so for passing. At around 65mph the coach seems

to

Re: How fast do you drive your coach?

Reply #2 –
Yahoo Message Number: 14954
We had the same problem with another (unnamed coach) The solution was tighting up the shocks.

Russ and Jean
05 Intigue LE
11883

Quote from: jennylindca
The bounce could be your shocks; had to have mine adjusted for the > same reason. Other experts should speak to the tire issue.

Carol

04 Inspire 51046

:
>

> The sign on the shifter console says our coach is rated to

65mph.

Quote
That's about as fast as we have been driving it with occasional > > bursts to 70 or so for passing. At around 65mph the coach seems > to

> have either a bounce in the suspension or tires out of balance.
> The condition is not constant and I can't really tell how bad the > > roads are becuase I haven't driven them in something other than

the

Re: How fast do you drive your coach?

Reply #3 –
Yahoo Message Number: 14957
Bob,

The coach speed rating is important because you tires are rated for speed also. If you have the 315 or 365 tires your speed rating is 65mph. If you have the smaller tires they are rated at 75 mph. For each MPH over the rated speed you start to lose carrying capacity. The only way to make that up is to add air to the tire, and in most cases you can't add any air because you are running near the tires air limits. Read the small print in your tire charts and they tell you to add 10 pounds of air over what you need to get the speed up to 75 mph on the 315s. I have never seen anything about adding air to the 295s. They are rated at 75mph. We have an 05 Magna and we rarely drive over 65 because that is what our tires are rated at. We get passed all the time by coaches doing 75 and 80 but I'm glad they don't stay around us a long time. At that speed their load capacity is reduced dramatically.

Bill G. 2005 Magna #6425

Re: How fast do you drive your coach?

Reply #4 –
Yahoo Message Number: 14958
Quote
Quote from: gablerwh@a...
Bob & Gloria,

It is interesting that you used the word bounce. As you probably know a shake in the steering wheel may be wheel balance but a bounce may be caused by out of round tires or tires not properly seated to the rim which would make them out of round. Check the shocks as mentinoned but also examine the tire bead right at the rim to see if they are mounted correctly. Then, with a dial indicator have a tech check for roundness of the tires. IMHO they should not exceed about .040 from high point to low point. Anything approaching .060-.070 is cause for tire truing (which many do not believe in) or warranty replacement of the tire.

Lyle Wetherholt
04 Intrigue 11740
Bob,

The coach speed rating is important because you tires are rated for speed

also. If you have the 315 or 365 tires your speed rating is 65mph.
If you have

the smaller tires they are rated at 75 mph. For each MPH over the rated speed

you start to lose carrying capacity. The only way to make that up is to add air

to the tire, and in most cases you can't add any air because you are running

near the tires air limits. Read the small print in your tire charts and they

tell you to add 10 pounds of air over what you need to get the speed up to 75

mph on the 315s. I have never seen anything about adding air to the 295s. They

are rated at 75mph. We have an 05 Magna and we rarely drive over 65 because

that is what our tires are rated at. We get passed all the time by coaches doing

75 and 80 but I'm glad they don't stay around us a long time. At that speed

their load capacity is reduced dramatically.

Bill G. 2005 Magna #6425

Re: How fast do you drive your coach?

Reply #5 –
Yahoo Message Number: 14962
[Country-Coach-Owners] Re: How fast do you drive your coac My 04 Intrigue had front end shimmy, bounce, and bottoming out problems. The issues were:

1) Shocks not adjusted properly from factory
2) Ride height not set properly
3) Pressure too low in front airbags
4) Front right tire out of round (bad - was replaced)
5) Needed front end alignment
6) Wheels not properly balanced.

All of these items contribute to ride quality.

Hope this helps. ;-)

At 7:50 PM +0000 2/14/05, dosgoldens wrote:

Re: How fast do you drive your coach?

Reply #6 –
Yahoo Message Number: 14966
We had a slight "bounce" in the front of the coach that started at 62MPH. During the fault finding process, all of the tires were dismounted, re-balanced, and a couple of inner wheels were changed out. Finally had the fronts spun up on the coach to an RPM equal to the 62 MPH. At that point, one front tire went crazy. The tire was replaced and the bouncy ride was cured. Just because a tire in in balance doesn't mean it is not out of round or can go out of round at high speed. The tires should be spun up while mounted on the coach and they should be spun at an RPM that is equal to road speeds.

Don

'02 Intrigue #11427

Quote from: bobstep
The sign on the shifter console says our coach is rated to 65mph.
That's about as fast as we have been driving it with occasional > bursts to 70 or so for passing. At around 65mph the coach seems

to
'02 Intrigue #11427

Re: How fast do you drive your coach?

Reply #7 –
Yahoo Message Number: 14967
Bill, just curious, but where do you get your tire information from? thanx, Jim 10996

Re: How fast do you drive your coach?

Reply #8 –
Yahoo Message Number: 14973
I base my speed limit on the limit of my towed vehicle as well, which is 65mph. I usually do at least 5-10 mph under the posted speed limit on four-lane highways, stay in the right lane and let the world pass me by. I am in no hurry, on no schedule and retired. I spent 37 years being on-time and on a tight schedule. No more! I can sit back and enjoy the ride and my surroundings without having to try to keep up and I rarely have to disengage my cruise control.

Jim Hughes

2000 Allure #30511

Quote from: bobstep
The sign on the shifter console says our coach is rated to 65mph.
That's about as fast as we have been driving it with occasional
bursts to 70 or so for passing. At around 65mph the coach seems

to

Re: How fast do you drive your coach?

Reply #9 –
Yahoo Message Number: 14975
In recent months we have traveled 500 miles by car between OR. & CA on a regular basis (ten trips so far).
By car the journey can range in time from eight hours five minutes (yesterday) to eight hours twenty-five minutes.
The difference is traffic conditions and stop-over times. To really make good time it isn't how fast we go above the speed limit it is minimizing the time lost taking potty breaks or re-fueling.
We often get passed by people traveling much faster only to catch up with them at rest stops where they are using up their five minutes saved on the road to walk the dog or check the facilities.

I guess it is like the old story of the tortoise and the hare.

PS Our cat makes the whole trip without a potty break. GGGGG

David & Karen

2000 Intrigue 11062
40 ft Single slide. PT
2002 Odyssey TOAD

Re: How fast do you drive your coach?

Reply #10 –
Yahoo Message Number: 14976
We usually drive the speed limit if it is 60 or less. In states where the speed limit is 65 we usually still drive 60. Here on AZ and other western states where the speed limit is 75 we try to maintain close to 65 if possible so we don't end up being a "rolling roadblock". Vehicles traveling too slow on the 2 lane freeways can make a real mess of traffic and between Phoenix and Tucson the traffic on I-10 is pretty heavy.

Re: How fast do you drive your coach?

Reply #11 –
Yahoo Message Number: 14978
In California THE maximum speed limit when towing a car is 55 MPH. No exceptions. Been there and learned that.
Plus: every 1 MPH driven over 55 results in the loss of 0.1 MPG of fuel.
Driving 65 thus drops fuel economy by 1 full mile per gallon.
And, accordingly to Caterpillar, on a C-13 CAT engine the best fuel economy is obtained by keeping RPMs at 1450.

All factors to be considered.

Tom

05 Magna #6479

Re: How fast do you drive your coach?

Reply #12 –
Yahoo Message Number: 14981
If you drive 64.999 they'll( the natives ) and trukers doing 80 will blow you off the road. Especially between Tucson and Benson TWI
 

Re: How fast do you drive your coach?

Reply #13 –
Yahoo Message Number: 14985
Jim,

My tire information comes from a seminar at FMCA in Brooksville last week. The seminar was directed by Away We go Weight Company which has nothing to do with the tire companies. You will also find it in the tire books of Michelin and Toyo. This also came up at a Les Swab seminar at a CCI rally and Les Swab said Michelin was going to raise the rating but when I spoke with a Michelin engineer at FMCA in NM he said no way, it will stay at 65mph. This 65mph rating is also printed on the side of all the 315 Toyo and Michelin tires, don't know about Goodyear but they are probable the same. No one bothers to read whats on their tires but they should.

Bill G. 2005 Magna #6425.