Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×

Thread Tools Display Modes
Old 08-06-2009, 09:40 AM   #1
Bus Nut
Join Date: Dec 2006
Location: downriver, detroit mi
Posts: 794
Re: Tire sizes

11 or 11.00 = width in inches
R= radial
22.5= wheel or rim diameter, aslo the .5 denotes a tubeless tire, a 20,22 0r 24 would be a tube type tire.

paul iossi is offline   Reply With Quote
Old 02-02-2011, 09:34 PM   #2
Bus Nut
Skunky Bus's Avatar
Join Date: Feb 2010
Location: Huron, South Dakota
Posts: 422
Year: 1976
Coachwork: Wayne
Chassis: Dodge S-600
Engine: 360 V8
Rated Cap: 66
Re: Tire sizes

Anyone know the outside diameter of 8.25-20-10 or 9-20-10 tires? And the nearest size tubeless substitute?
Any action for which there is no logical explanation will be deemed "company policy."
- Akvol's Second Law of the Corporation
Skunky Bus is offline   Reply With Quote
Old 02-11-2011, 10:34 PM   #3
Bus Nut
sportyrick's Avatar
Join Date: May 2006
Location: mid Mo.
Posts: 891
Year: 1976
Coachwork: bluebird
Chassis: F33695
Engine: 427 chevy converted to 466
Rated Cap: 84
Re: Tire sizes

I think I can say with confidence my 9:00-20's are 40" cuz I just measured them. If my memory is correct my 10:00-20's are the same and I tried to use an 8.25-20 in place of a 900 once and they are 2" difference. If it wasn't so damned cold I would go over to the other building and measure my bus and the 10:00-20's on it and make sure I am right. An 11R22.5 is the same height as an 10:00-20 but is an inch wider. Fact is we just compared a 24.5 to a 22.5 and then to a 22.5 low pro and each is 2" shorter respectively. sportyrick
sportyrick is offline   Reply With Quote
Old 02-13-2011, 06:52 PM   #4
Bus Crazy
Join Date: Oct 2004
Location: New England
Posts: 1,009
Year: 1993
Coachwork: Ward Genesis
Chassis: International
Engine: DT466/MT643
Rated Cap: 77
Re: Tire sizes

A 10.00-20's replacement is an 11R22.5 or 295/75R22.5
A 9.00-20 is replaced by a 10R22.5 or 265/75R22.5 (275/70R22.5 should also work)
An 8.25-20 is replaced by a 9R22.5 or 245/75R22.5 (255/70 should also work)

In all cases, the metric sizes are maybe 1" shorter in diameter with the same weight capacity and rim size. If possible, I suggest running 11R22.5's or 295/75R22.5's--these are the industry-standard Class 8 truck sizes and drt-common EVERYWHERE.

Also, Michelin is weird with 22.5" tire sizes: a 295/75 is a 275/80 to them. A 265/75 is a 255/80, a 245/75 is a 235/80. They are the same size, they just don't say so. (Don't look at me, I didn't come up with this cockamamie size thing!)
Optimism is a mental disorder.
Jarlaxle is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Skoolie sizes Les_stephs Skoolie Conversion Projects 4 09-26-2014 08:21 AM
rub rail types-sizes etc bansil Conversion General Discussions 7 05-28-2012 07:09 PM
bus sizes availible bansil Conversion General Discussions 3 11-25-2011 08:16 AM
Mixing tire sizes steers and drives kotflb Conversion General Discussions 6 06-18-2011 03:09 PM
SEA engine bell housing sizes frank-id Everything Else | General Skoolie Discussions 0 02-27-2011 10:29 AM

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 03:38 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.