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#1 NINK

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Posted 03 June 2012 - 11:22 AM

Hello. We recently purchased a motor home and plan to purchase new tires for it (taken into account with the purchase price) next week. The placard in the coach indicates 295/75R/22.5 for the tires, but I have yet to find anything on the coach that indicates a load range. The brochure for the motor home that I found online indicates load range H. We are full-timers, the motor home has a GVWR of 46,000 lbs. and a tag axle. The tires currently on the motor home are Toyos 295/75R/22.5, load range G. We went to Strouhal last week and asked for pricing based on 295/75R/22.5, but did not mention the load range. We received quotes for Michelin and Goodrich, but they were 275/80R/22.5, with load range G. From various things I've read and researched, it appears that the Michelin 275/80R/22.5 tire may be the same as other brands' 295/75R/22.5 tires. Have any of you gone from one brand's 295/75R/22.5 to a Michelin 275/80R/22.5 without problems? We later received a quote for Generals with 295/75R/22.5, load range H. Reviewing General's website, I don't find any mention of RVs, but the website states it has a wide range of tires for commercial purposes. Do any of you have General tires on your coaches? It costs quite a bit to change all tires and we would like to be certain we're getting the proper tires for our intended purpose. Thanks much.
Bob, Janice & Guinness
40' 2001 DS Monaco Executive, towing 2009 Saturn Vue

#2 Mark & Dale Bruss

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Posted 03 June 2012 - 01:19 PM

Just take a quick calculation of 46,000 / 8 = 5,650 lbs a tire.

Note this is not the valid way to determine the tire capacity for yourr RV. A per wheel weighing should be done because RVs are not symetrical and wheels on one side can have more weight than the other.

But back to the 5,650, that looks like G Load Rated tires would not meet GVWR.,

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#3 AFChap

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Posted 03 June 2012 - 02:19 PM

I too have read that 275/80R22.5 is identical in size, width, etc to 295/75R22.5... whatever you get, I definitely would go with LRH tires.

My coach came with 275/80R22.5 LRH Mchellin XZA2's. I replaced them with 275/80R22.5 LRH Continental HSL's for apx $100 less per tire (from national chain Best One Tire). The Continentals have several thousand miles on them, and ride and handle great.

Edited by AFChap, 03 June 2012 - 02:20 PM.

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#4 George Stoltz

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Posted 03 June 2012 - 02:22 PM

I totally agree with Mark & Dale. You should get the rig weighed at each wheel. Once that is done you will know the load on each tire and you can then determine the pressure that each tire should be inflated to using charts from the tire manufacturers. Load range H is definitely in your future. This is not an inexpensive nor a quick process. But at 46,000 pounds you need to be safe. And while on the subject of tire safety I definitely recommend that you acquire a Tire Pressure Monitoring System (TPMS).
George Stoltz



#5 NINK

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Posted 04 June 2012 - 01:32 PM

Thanks for the responses. We've decided on load range H.

Safe travels.
Bob, Janice & Guinness
40' 2001 DS Monaco Executive, towing 2009 Saturn Vue