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Old 06-14-2007, 11:26 AM   #1
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The person that services my motorhome had some negative comments about the low profile 22.5 tires on it. He claims 22.5 run hotter and ride harder, etc. Now that I am beginning to consider replacing my 4 year old tires his comments came to mind. Should I consider replacing the 22.5s with 24.5s? Has anyone done this?
Pros and cons?
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Old 06-14-2007, 11:26 AM   #2
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The person that services my motorhome had some negative comments about the low profile 22.5 tires on it. He claims 22.5 run hotter and ride harder, etc. Now that I am beginning to consider replacing my 4 year old tires his comments came to mind. Should I consider replacing the 22.5s with 24.5s? Has anyone done this?
Pros and cons?
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Old 06-14-2007, 11:57 AM   #3
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Not sure whether I would trust this guy servicing my MH with a suggestion like that. Can't think of a pro except maybe a smoother ride due to less air pressure.
Several cons though.
Probably won't fit into your wheel wells
You'll need 6 new rims, $$$$$
Will the bolt holes on the new rims fit the hubs?
Speedometer and odometer will have to be recalibrated.
Your rear end ratio will effectively become much higher, less pulling power.
Check with the coach manufacturer about possibly running a somewhat larger 22.5 tire if that's your desire.
Dave
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Old 06-14-2007, 01:21 PM   #4
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Your service guy might be right reference the harder ride. I had 70 series 22.5 on my MH and changed to 80 series 22.5 and had a ride improvement. However, I do not think going to 24.5s is a good idea. What size and make tires are we talking about, 275/70's?
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Old 06-14-2007, 03:32 PM   #5
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You do not say what tire size you currently have. There are 24.5 lo pro tires which have the identical overall diameter of some "standard" size 22.5 tires. In these cases, there are no speedo recalibration issues and yes, the bolt pattern for either size wheel is the same. Just make sure you are using the correct mounting, stud piloted or hub piloted wheel. Years back, many fleets moved from standard 22.5 rubber to lo pro 24.5 rubber because of the savings in FET on the tires.
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Old 06-14-2007, 04:11 PM   #6
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My present tires are 275/80 R 22.5. I didn't realize there wouild be such problems as rim fit, recalibration, and rear ratio, etc. That is enough to make me want to forget the whole idea. I just thought I'd throw the idea out to the forum. And I'm glad I did.
Thank you for your responses.

Gary
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