Wheels! 22.5 vs. 24.5

From what I've seen generally they are chosen for the application.

Many tough off road tires are only for 24.5s. Heavy haul/off road trucks run 24.5s . Usually talls. The long nose conventionals all seem to run 24.5 lp s now to get a mix of capacity and mileage. Looks also play into the use of them on the bug hoods and I'll admit they do look better on those trucks.

Cost is all over but generally you will generally pay more.

One thing to note is for guys running tires as steers then drives then the rest of their life on the trailer it's much easier to do this with 22.5s.

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According to Bridgestone, tire for tire, the LP24.5 has the lowest rolling resistance.

I think LP 22.5 is more popular because of a lower FET which was/is charged based on the tire weight. So the "energy" tires are built in the most popular size- 22.5.

LP 24.5 and 11R22.5 are the same height, BUT the 11R22.5 can carry more weight. It isn't an issue unless you want to carry more than 12,000 on your steering. Many states allow 600# per inch of tire width on the steers so an H rated 11R22.5 will let you carry 13,200# whereas the LP 24.5 can only carry 12,350# and only comes in a G rating.

In Canada, the most popular size is 11R22.5, I suspect because of the higher weight limits.

 

Actually a LP22.5 tire will get better fuel economy than a tall 22.5 or LP24.5 (same diameter) because of less rotating mass. Why do you think almost every company uses them? Its not for their availability, because that only exists because so many trucks use that size of tire.

 

Lots of good info here:

http://www.bridgestonetrucktires.com/us_eng/answers/doctor_specs.asp#1a