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Old 02-21-2015, 01:11 PM   #1
Padgett
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Default Tires and clearance.

OK I have a 2006 2720SL which is evidently a pre-lift model. It came with 215x75x14 LRC max load 1870 lbs. TM did not think this enough so added a second sticer saying to overinflate to 55psi. In theory this would add about 8% to the load rating or 2019 lbs. Tire is 26.7" diameter

Saw many going to 15 inch tires but I did not want to add a spacer (I like being able to see the roof when closed) & concernerned about the effect of raising the CG on stability so looked for something that did not need it.

Found the 205x75R15 LRD which is rated at 2150 lbs @ 65 psi. Felt like a comforable mix of common and margin. These proved fine for towing and stay cool at 65ish for hours even in Florida. Tire is 27.1" diameter so .4" increase and less than 1/4" reduced clearance. (225x75x15 is 28.3).

Now I also run the TM light with less than 1/2 tank of water and dry gray tank and Thetford. Provisions and such are carried in the TV. I also have not experienced any ungraded dirt roads or sudden grade changes. Worst things are the neighborhood speed bumps and when not on a highway or Interstate where I can see 1/4 mile in front, tend to drive a bit slower than some.

Found out a long time ago that driving slow the 1-5% of the time when appropriate does not really impact a 500 or 1,000 mile day.

OK, just back from a 400 mile trip and have about 1500 miles on the new tires. Just prior I noticed some evidence of rubbing at the top of the street side tire and applied to duct tape from inside the LAV so over the worn area. On return from south Florida looks exactly the same as before so no idea how long has been there but that extra 1/4" seems about right for the wear pattern.

Is possible that PO regularly overladed and rub is from 14s after axle sagged a bit.

On curbside I have two fingers clearance, on street side, one is tight so need two & would prefer three (2 1/2")

Now need to decide what to do. I have a replacement wheel well liner but the real limiting factor is the floor on the inside and the side panel cut out on the outside. I am assuming that both are the 3" aluminum/foam/aluminum sandwich. Radiusing the wheel well is not difficult. Indenting the floor an inch more so. Or cut and band the platic wheel well to add an inch.

Or could also just put a few layers of racer tape on top and fagedaboudit have seen worse rubs on muscle cars and it is just plastic...

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