I just bought a used 2004 Winnebago Sightseer 30B workhorse chassis. As I drove it on the highway I struggled to keep it in one lane. I've read so much I'm now confused. The last advise was to replace my front tires and put on Michelin XZE. Please helpMarty

Check your load distribution. Most coaches handle better if the front axle is loaded close to maximum axle capacity. Empty coaches will handle different but usually a loaded coach handles better.Next you want to insure that your tire pressure is correct. This can only be determined if you weigh your coach when it is full loaded for travel and with all occupants in their seats. The adjust your tire pressure according to the Tire maker's specs. Then you need to look for worn suspension components like bad shocks, etc.

Proper tire pressure for the ACTUAL load is a starting point. Then get it aligned and be sure they set the caster at the upper limits.

Years ago I had the problem on 27' motorhome and bought wider wheels for it. That was a manufacturer who did just that. Going from 90psi in "bicycle size" tires to 50psi in wider wheels make whole World of difference.

Marty,Workhorse P or W chassis? They are very different.

wolfe10 wrote:Marty,Workhorse P or W chassis? They are very different.Yep and the W chassis isn't equipped with sway bars, if I'm not mistaken. Doesn't seem to bother some people, but many have installed after market equipment and I think that Helwig might be one company with a kit.First and before even looking into such things, one must be sure that what they have already is right with tires pressures and such, as already mentioned, but the brand of tires, would be the last thing that comes to mind.I'm thinking that 2003 might have been the end of the P chassis, so we're close here with what the OP might have and regardless for the year of the coach itself.

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Kayteg1
Explorer II
Jun 21, 2015
Years ago I had the problem on 27' motorhome and bought wider wheels for it.
That was a manufacturer who did just that.
Going from 90psi in "bicycle size" tires to 50psi in wider wheels make whole World of difference.
427435
Explorer
Jun 21, 2015
Proper tire pressure for the ACTUAL load is a starting point. Then get it aligned and be sure they set the caster at the upper limits.
rgatijnet1
Explorer III
Jun 21, 2015
Check your load distribution. Most coaches handle better if the front axle is loaded close to maximum axle capacity.
Empty coaches will handle different but usually a loaded coach handles better.
Next you want to insure that your tire pressure is correct. This can only be determined if you weigh your coach when it is full loaded for travel and with all occupants in their seats. The adjust your tire pressure according to the Tire maker's specs.
Then you need to look for worn suspension components like bad shocks, etc.

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