Class A. Wheel size

timmac wrote:

seedhay wrote:
I don’t know if this is the place for this question. I am a year away from upgrading from class C Ford 29 ft to 31 to 35 foot class A. The new Ford A chassis should be out by then with the bigger engine and 10 speed trans. My first question is the bigger engine going to be a V 10? Second is opinion from current owners that have had both 19.5 and 22.5 tires. I am excavating contractor and have always gone with biggest wheels possible. Problem I have is most 32 footers are 19.5 rubber ( but is my preferred size for coach. Or the 35’s with the 22.5

Thanks in advance for you opinions
Seedhay

I have 19.5 tires on a 33 foot motorhome with 2 slide outs and never a issue with the tires, as to weight carrying also no issue, my 6 tires carry more weight than the 20,500 lb chassis does.

Also a plus for 19.5 is you can carry a full mounted spare and they cost less..

I'd suggest that you look at the broader picture. It's not just about the load that the tires can take. The tires transfer their load to another surface. (it's called the roadway, whatever that surface might be) When you have smaller tires, they must transfer higher unit loads to the surface they are in contact with. That means that they have the potential to overload the contact surface. Your potential to get stuck on soft surfaces goes up the more highly your tires are loaded and the softer the surface is.

There are many other factors (benefits) to larger tires/wheels but that is beyond the scope of this discussion.

Chum lee