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Old 04-11-2012, 12:44 PM   #1
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dual tire question

Being new to RV's I need a little clarification on the tires on the rear of my 95 Brave, 27'. The coach had these tires on when I bought it two months ago. Lt 235-85-16", Toyo Open country. My question is: Are the tires suppposed to rub up against each other, the inside sidewalls, when the tire rolls? Is this unsafe? Thanks
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Old 04-11-2012, 12:47 PM   #2
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There is supposed to be clearance between the duals. If not the heat will build up and they will catch fire. Dangerous!!!!
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Old 04-11-2012, 12:47 PM   #3
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No they're not supposed to rub and yes this is unsafe. Please have this attended to ASAP. Welcome to IRV2
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Old 04-11-2012, 12:48 PM   #4
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Oh my, the rear tires should not rub together at any point. This will cause abrasion and premature blow outs.

Check inside the mh on the wall near the driver seat area for a VIN/info plate. It should have the recommended tire size and inflation on it.
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Old 04-11-2012, 05:38 PM   #5
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Dual tire question

Thanks, Gentlemen for the responses. Evidently I have a serious saftey concern. As I said, the tires were on the coach when I bought it. The coach calls for 7.50R16 tires at 65 psi. I will have to check if on the size cross references, to see what is screwed up. Again, THANK YOU!
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Old 04-11-2012, 06:24 PM   #6
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winnbrave1,

It sounds like you are going to have a tough time finding a newer metric tire that will fit the rear duals properly. The OEM tire tread width is 7.5" The LT235/85/16 metric tire has nearly the same outside diameter but tread width is 9.25".

As you go to a lower number like 215/85/16 the tread width gets narrower, but tire diameter gets smaller. You will loose payload capacity and a smaller diameter tire spins faster (dangerous) and will cause speedo error problems.

According to tirerack.com Yokohama still makes the 7.5 x 16 standard size commercial tire. I would recommend getting 4 of those.
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Old 04-11-2012, 06:32 PM   #7
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There was a thread a while ago aobut a tire blow out. The poster was complaining about the tires, but from the pictures you could clearly see they had been rubbing against each other.
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Old 04-11-2012, 08:51 PM   #8
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dual tire question

Thanks everyone, and John. I was getting kinda frustrated trying to find a suitable replacement. I will check out the yokohamas.
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Old 04-11-2012, 09:25 PM   #9
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You could maybe find different rims, ones that have a little more dish to them. You would have to make sure you have enough room inside clearance and out. This way you would solve future tire purchases. Just a thought. JMO
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Old 04-12-2012, 09:23 AM   #10
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If the wheel studs are long enough you could get a spacer to go between the wheels to separate them. It would be much cheaper then replacing tires and rims.
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Old 04-12-2012, 10:45 AM   #11
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Quote:
Originally Posted by blackf3504dr View Post
If the wheel studs are long enough you could get a spacer to go between the wheels to separate them. It would be much cheaper then replacing tires and rims.
I don't think I would trust 1-3/4" spacers in between the dually's, unless they were custom made out of one solid plate of metal/alloy. Doubt if there would be enough stud length left to do this.

I agree with rvjimmy, might be able to find different dually wheels to do the same thing, if the bolt pattern matched up. Then would be able to use metric tire sizes in the future. It will be hard to find 7.5 x 16 tires if one blows out on the road.
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Old 04-12-2012, 11:04 AM   #12
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sounds like you have load ratied D tires when you need E rated tires unless you have Es severly overloaded. If the latter is the case you need to drop the load.
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Old 04-12-2012, 06:56 PM   #13
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Very interesting. I also have a 95 Brave 27'. I just went out and checked the tires. They are LT 235-85-16 Bridgestone. They do touch at the bottom where the weight is on the tread but the rest of the tire has clearance that you can put your hand into. These tires have been from Arizona to Illinois and Illinois to Florida. Both during the summer months. I never noticed that they touched at the bottom before. I have a tire pressure monitoring system on the MH (Pressure Pro) and they have not shown any increase in pressure any more the the fronts. It's got me thinking now.
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Old 04-12-2012, 07:10 PM   #14
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Quote:
Originally Posted by rvjimmy View Post
You could maybe find different rims, ones that have a little more dish to them.
"Offset" is the term used in the industry.
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