Newbie needs help with new tire size

[WPDPCANADA]

Need new tires for my ‘new to me’ 2007 Winnebago Journey. It has Michelin 25580R22.5 XRVs on it – I am in Alberta Canada and this size is not available (back order unknown times).
Questions: 1) tire shops say 25570R22.5 will work and they have those. Will this size produce the same ride given that the 25580 is what it was shipped with new? 2) Michelin 25570R22.5 are C$650 / tire and tire shop can offer Sumitomo tire in same size for a lot less ($C367/tire ), Does anyone have experience with the Sumitomo? They are a lot cheaper and sometimes you get what you pay for. 3) Had a suggestion to put the Michelins on the front and the Sumitomo on the back – I am a newbie to Class As so is that a good idea or not? I don’t want to save a few bucks and screw up how it rides/handles/ wears.

[Americanrascal]

Just converted my front tires from that Michlein size to Toyo and was very pleased with the new ride and a whole lot less $$$$$

Toyo 265/75R22.5. Darn near and exact match! And a fantastic ride!

[Oldchinahand]

Here's my opinion.

We are on our 3rd set of tires. Followed the original 25580R 22.5 Michilins with 25570R 22.5 Dunlops. Last year, we installed 25570R 22.5 Coopers. Coopers are American made, available everywhere and tire of choice at my last (before retirement) distribution center.

70's have a higher load capacity than 80's and are not as hard to find as 80's. HOWEVER, they are about 2 1/2% smaller in diameter than 80's. Your speedometer will indicate slightly faster than actual, and your odometer will also read slightly over actual. (I believe there is a fix for that, just hasn't seemed important)

Here's another thread on this subject https://www.winnieowners.com/forums/...-a-355405.html

Fair Winds and Following Seas

[Oldchinahand]

One other point. I am not a fan of driving anything I have with a mix of different tires.

Fair Winds and Following Seas

[jerichorick]

Originally Posted by WPDPCANADA

Need new tires for my ‘new to me’ 2007 Winnebago Journey. It has Michelin 25580R22.5 XRVs on it – I am in Alberta Canada and this size is not available (back order unknown times).
Questions: 1) tire shops say 25570R22.5 will work and they have those. Will this size produce the same ride given that the 25580 is what it was shipped with new? 2) Michelin 25570R22.5 are C$650 / tire and tire shop can offer Sumitomo tire in same size for a lot less ($C367/tire ), Does anyone have experience with the Sumitomo? They are a lot cheaper and sometimes you get what you pay for. 3) Had a suggestion to put the Michelins on the front and the Sumitomo on the back – I am a newbie to Class As so is that a good idea or not? I don’t want to save a few bucks and screw up how it rides/handles/ wears.

Post #2 has a good answer. Toyo's have served me well over the years.