Tire dilemma..

[Gary RVRoamer]

You can also use an 11R22.5 as a sub for the 295/80R22.5. Very close in size and load capacity. You can also use a 10RR22.5 if you can tolerate a slight reduction in load capacity, which is usually fine on a motorhome tag or drive axle.


Even on a tag, I'd want the two tires to be the same diameter. I'd make those two tires the same once I had time to do some shopping.

[G jeffers]

Originally Posted by RonK

Traveling to Florida today, stopped at the Flying J and walked around the Motorhome to check things out as I normally do when traveling. Much to my amazement the left rear tire, tandem axel, had a lump on the side wall the size of a cantaloupe and was about half flat. After numerous phone calls I drove slowly, 2 miles down the road to a truck repair shop. They made numerous calls in an attempt to get the Michelin tire 295 80 22.5 I needed to no avail. He tracked down a other brand but the size was 295 75 22.5. With no other option calling other shops for over 1.5 hours he assured me that would not be a problem to use the 75.
My question is how confident should I be in this substitution???
Thanks and really hoping we make it the remaining 500 miles OK

I wouldn't put them together.

[Ray,IN]

Originally Posted by RI Expat

Mr. D has the right solution!

A mis-matched pair on a tandem will heat differently. Heat is not your friend.

This explains in detail why dual tires must be virtually the same diameter. https://www.truckinginfo.com/154830/...-tires-at-once
I would do as Mr. D suggests, different tires on the front may affect steering, but will not be a detriment to tires.