MH Tire Size Question

[SWharton]

Just came back from Alaska and needed new fronts. Original size is 235/80 22.5. I want to put on 265/75 22.5. Plenty of space. Any problems with doing this?

[FL-JOE]

Don't have any idea what Class A you have, gas/diesel, F53 frame or air suspension?  I am guessing going with a smaller wider tire wouldn't cause any issues.  Wonder what size the original tires were suppose to be?

[SWharton]

WE have a Winnebago F53. Original size 235/80. This of course is a Michelin only size. GRRRRR.... so most people switch to the 245/75, a more standard size. We have been weighed and the 245 would work but I feel a lot more comfortable with the 265 and its weight capacity.

Just wanted to check with those in the know if thee was something inherently wrong with doing this.

[Darryl&Rita]

Looks like it's a little under an inch taller, and a little over an inch wider. Your spedo/odometer will be slightly off, but only slightly. From here.

[SWharton]

That's kind of what I thought, no big deal. Peace of mind.

[Bill Joyce]

You can get the engine manufacturer to adjust the speedometer.  When we changed tire sizes Cummins made the computer change.

[Darryl&Rita]

I zoned when they said they were looking for fronts only, but Bill is correct. Some tire shops can also do it, as part of the sale. In the case of rear tires, that wider tread face may cause sidewall interference, so shop carefully. 

[SWharton]

Thanks for the speedometer info. Probably not enough of  difference to worry about.

The tire guy checked and said we had plenty of clearance in the rears. Won't be for a few years yet.

We were planning to wait for the fronts until next spring but he had them in stock, fresh date so we decided to take advantage while we were here.

[filthy-beast]

Make sure that inch taller and inch wider will not rub on anything at full steering stops both left and right.

Edited September 28, 2019 by filthy-beast

[SWharton]

We just got them installed and backed into our site with no rubbing. All appears good.

[Jennifer Ministries]

I wannna suggest you all to take listen as on below attached link. as it can help you a lot knowledge of tire size. 

lets try and all the best!! 

https://www.bridgestonetire.com/tread-and-trend/drivers-ed/what-is-the-tire-size-for-my-car

 

[TireHobby]

On 9/27/2019 at 4:40 PM, SWharton said:

 

Just wanted to check with those in the know if thee was something inherently wrong with doing this.

Without some sort of approval from the vehicle manufacture, it's a safety violation. 

[SWharton]

Putting on heavier duty tires would be a safety violation????

FYI. Everyone changes tire sizes since the mfgs. do not make the same size tires, especially Michelin who makes numerous odd size tires.

[jblo]

I would think only going to a lesser capacity tire than was specced by the mfg would be a problem, not upsizing.

[Ray,IN]

On 9/27/2019 at 7:10 PM, Darryl&Rita said:

Looks like it's a little under an inch taller, and a little over an inch wider. Your spedo/odometer will be slightly off, but only slightly. From here.

He said fronts. Unless he has a GMC MH it doesn't matter.

[Ray,IN]

On 1/16/2020 at 10:41 AM, SWharton said:

Putting on heavier duty tires would be a safety violation????

FYI. Everyone changes tire sizes since the mfgs. do not make the same size tires, especially Michelin who makes numerous odd size tires.

No, no violation of any kind. Just like putting wider/different tires on your hotrod back in the day.

[Darryl&Rita]

On 9/28/2019 at 8:15 AM, Darryl&Rita said:

I zoned when they said they were looking for fronts only,

Thanks, Ray. Not like I wasn't already called out on it.

[Ray,IN]

On 5/12/2020 at 9:30 PM, Darryl&Rita said:

Thanks, Ray. Not like I wasn't already called out on it.

I apologize, I didn't mean to be insulting, sorry.

[Darryl&Rita]

All good, Ray. We've both been around here long enough to know better.