I replaced the 11R24.5 tires on my 1992 (Bridgestone load range H) with new Bridgestones, load range H. After about 8 months, I upgraded my front tires to Michelin 305/75R24.5 load range J since Newell confirmed the front end was tire limited.
I have been impressed with both the Michelins and the Bridgestones. I don't like running tires on a motorhome that are more than 7 years old. Newell suggests that front tires be replaced every 3 years on the newer coaches with very heavy front ends.
The less frequently a Newell, or any other motorhome, is driven, the more likely the tires will deteriorate and start cracking prematurely. When I bought my coach, the tires were 13 years old and all of them showed significant side wall cracking. When the tires were removed, I also noticed large cracks inside the treads of the rear tires.
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