PDA

View Full Version : 20's VS 22.5 Rims & Tires


Newell Attack
02-08-2006, 02:32 AM
What is the real reason behind the folks going with the 22.5's over the 20''s. I have seen Newell Classics with both. Is there a logical reasoning for this?

Newell Attack

Ground Control
02-10-2006, 02:49 AM
Hi Jeff and Leann and welcome to Newell Classic. It's great isn't it. With regards to your tire question, the 20's came out before the 22.5's. I have had both on a Newell and I actually like the 20's when I had them on a coach, the ride was exceptional. The 22.5's will be a lower profile tire to get the same height which will be a harder ride. I have even seen some Newell's with 24.5's which I don't care for the idea much. From my knowledge the 20's are really cheap to buy compared to the 22.5's. Especially in a bias ply. There is a guy on ebay selling them for $85.00 by the name of Tucker Tire. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5516710499&category=1467

fulltiming
02-22-2006, 06:20 PM
Though the years, Newells got heavier. As the weight increased, the tires became the limiting factor in the Gross Vehicle Weight Rating. Larger wheels and tires were needed to handle the greater weight.

My 1992 has 11R24.5 tires. Even at that, an H rated tire is required to keep the tires load capacity from being less than the axle weight rating. My GAWR (gross axle weight ratings) are steer: 13,200#, drive 22,000#, tag 10,000#. My H rated Bridgestone R280 11R24.5 tires are rated at 7,160 single and 6,610 in dual configuration. The G rated tire (only sheet I have is for a Goodyear G357) is 6,430# single and 6,000# in dual configuration. I would be OK with the G rated tires on the drive and tag axles but not on the steering axle. As a comparison, the G357 11R22.5 G rated tires are 6,175# single and 5,750# dual.

Since load is rarely distributed equally between the right side and the left side of a coach, it is always good to have extra tire capacity.

James Tuckness
03-28-2006, 12:05 PM
Our 71 30' coach came with the original 20" "suicide" center split wheels with 8.25 tube type rubber. The wheels were in good shape however they are dangerous. We upgraded to 22.5" using old U-haul rims from salvage for about $150 for six. Now have tubless 8R-22.5 radials. The tires are abvailable anywhere for about $200 and anyone will change them, not so with the original "suicide" wheels. The old wheels will hold a 20" radal tube type tire ($350 or so if available) but the old rims were never designed to hold the air pressure needed for this tire and may fail blowing apart from road impact. The 8R-22.5 uped the road speed about 4 mph over the original 20" wheels. Ride and handeling are great inprovment over the tube type tires. Pressure in front 110 lb and 100 in rear.

James

Hammer
03-13-2010, 09:31 PM
Hi Jeff and Leann and welcome to Newell Classic. It's great isn't it. With regards to your tire question, the 20's came out before the 22.5's. I have had both on a Newell and I actually like the 20's when I had them on a coach, the ride was exceptional. The 22.5's will be a lower profile tire to get the same height which will be a harder ride. I have even seen some Newell's with 24.5's which I don't care for the idea much. From my knowledge the 20's are really cheap to buy compared to the 22.5's. Especially in a bias ply. There is a guy on ebay selling them for $85.00 by the name of Tucker Tire. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5516710499&category=1467 I worked for tucker tire in covina ca in the 1990 or so Great guys and been around for a long time. I got a set of dunlops 22.5 for 120.00 each at century tire, And had a much better ride and after 10 years still no cracking in the tires, Tire black from turtle wax helped also.

prairieschooner
03-14-2010, 05:02 AM
Tucker Tire is the place to go. We used to get all of our tires from John at the one off Crown Valley Parkway