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Old 12-04-2011, 11:24 AM   #1
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HELP- Tire size?

Would like to get in-put from those that know. This is the first MH I've delt with, and after reading some of the post here in the forum I'm looking at the DOT date of the tires. Mine are 255/70R 22.5 on a 2001 HR Endeaver 38' w/2slides---Saw a post where someone said that they were undersized for the rig and should be replace with 275's. Is this common Will 275's fit? Will I need new rims? Will the change make for a better safer ride? I was going to put two new on front axel now, and then replace drive axel at latter date. If I need to change size I'll have to do all 6 at same time. Thank you for any info you might have.
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Old 12-04-2011, 12:03 PM   #2
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Do you have an owners manual for you MH? It should tell you what tire size to use. I can't believe Holiday Rambler would put undersized tires as OE. Have they been replaced by a previous owner?

The best solution is have your MH weighed, on all four corners, then find the tires that will support that load. Each tire manufacturer has a tire load/pressure table which will help you determine what tires you need to carry the load of your coach.

Jim E
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Old 12-04-2011, 12:54 PM   #3
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JIM<The Owners manual is with MH at storage, still looking on line for info. There are so many post about sway bars, new shocks other than OM parts, safe-t steer, Banks kit so on and so forth, ect. and why didn't they come this way in the first place. That I was affraid that this was just another case of cost cutting. I'm not sure if I'll ever be able to have it "JUST RIGHT" if I keep reading the forums. I want to be as safe and trouble free as I can be out on the road with my family. I'll try and weigh as recommended. I'll asume that the heavest point would be the determining weight. Although, I think load range c-d-e-f-g-h-j could be selected in either size tire. Thanks Again, David
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Old 12-04-2011, 03:00 PM   #4
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Quote:
Originally Posted by Daffy Duck View Post
JIM<The Owners manual is with MH at storage, still looking on line for info. There are so many post about sway bars, new shocks other than OM parts, safe-t steer, Banks kit so on and so forth, ect. and why didn't they come this way in the first place. That I was affraid that this was just another case of cost cutting. I'm not sure if I'll ever be able to have it "JUST RIGHT" if I keep reading the forums. I want to be as safe and trouble free as I can be out on the road with my family. I'll try and weigh as recommended. I'll asume that the heavest point would be the determining weight. Although, I think load range c-d-e-f-g-h-j could be selected in either size tire. Thanks Again, David
IMO, most of the after market "stuff" is not necessary from a safety point of view. It's not cost cutting because these "things" were not OE, its cost savings. There is a difference. Nice to have stuff is costly. The load range is dependent on the load. There are two "heavest" points, the front axel and rear axel. I think most RV's come with the same tires on all wheels based on the heavier axel.

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Old 12-04-2011, 03:58 PM   #5
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Hi Daffy Duck,
To determine if the correct tires are on the coach, have the coach weighed. Determine the load rating of the tires. Determine the Gross Vehicle Weight Rating and the Gross Axle Weight Rating for each axle. With this information you'll know if the tires are undersized.

Gut feel the tires are the correct size and rating for your coach. If that is true, it becomes your decision when to replace them. As to the after market products, I agree with Pairajays's posts. These items are not necessary but nice to have. I am an example of this. I've spent over 10K on getting just the chassis to perform the way I want it to. I'm quite happy with the after market products and their performance.
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Old 12-05-2011, 02:19 PM   #6
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There should be a load rating and as built sticker in the RV. This is normally located in the passenger compartment near the drivers seat. This will have the Rim, Tire, Axle and recommended air pressure and tow rating of your unit asd built by the factory. I have two of these stickers on the outside wall just behind the drivers seat. The serial numbers for all of the chassis components are on one sticker and the weight/pressure recommendations are on the other sticker. Both stickers have the VIN number as supplied by Spartan to Guld Stream.
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Old 12-05-2011, 06:29 PM   #7
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Agree with the O/Ps, one other issue you may have if you use an other than specified tire size is clearence between the tire and other componets. On some coaches a 1/2 inch taller or wider will cause a problem especally on tight turns, I don't know if HR is one of them.
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