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Old 05-29-2017, 10:19 AM   #11
Larryjb
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When I took a look at the clearance between the tire and the fender skirt on my 215/75r14's, there is maybe 1/2" clearance or so. Those of you who put on 225/75r15's, how did you get them to fit?
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Old 05-29-2017, 12:09 PM   #12
gonzo628
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you mention clearance between tire and fender skirt. What about clearance on the backside (between tire and wheel well) Perhaps those running the other tire have a rim with a different offset?
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Old 05-29-2017, 12:51 PM   #13
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There isn't much clearance, but I don't think there needs to be. I have about 3/4 inch on my 225's. But a 215 is only slightly wider than a 205, and only half of the increase is on the outside, against the fender skirt. If you are concerned, the sketch in post #1 here may (or may not) help.

http://www.trailmanorowners.com/foru...ead.php?t=6245

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Old 05-29-2017, 02:02 PM   #14
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Thanks for the link Bill. It does help a lot. I remember seeing it at one time, but couldn't find it again. I "missed" out on the sale because the shop was discouraging me from even going LRD. I'm working with another shop that understands the need to avoid pushing limits. The other shop was trying to tell me that most flats are due to under inflation. While that may be true, it seems obvious from lots of other stories that there are other reasons for blow outs, including pushing limits of the tire.
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Old 05-31-2017, 04:07 PM   #15
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Quote:
Originally Posted by Larryjb View Post
I hear you Bill.

The other issue is how much extra am I paying to get rims that will support the tire pressure for a 2830# tire. Also, we have to remember that 280 pound upgrade is per tire, giving a 560 pound upgrade overall.


I'm still mulling things over. I have until Friday to make a decision (when the sale ends).
You don't have to air them up to e rating, which then will not require the rims. Air them up somewhere north of what the GY chart list for PSI to Tire Load.

The way I look at it; is an E Rated tire has structure equal to 4 more ply's then a C rated tire. Much tougher. When I pickup the NTU camper, I'm planning to install the 225x75x15 endurance tires, but will air up to about 56 PSI. I like to go up to 10 extra PSI than what the GY chart has listed. This give me the plus 10 PSI that GY call for in the service bulletin for traveling over 65 MPH. These tires at that PSI will give me a softer ride, but are much stronger tire.

GY tire PSI chart, see page 9: http://www.goodyearrvtires.com/pdfs/tire-care-guide.pdf

GY plus 10 PSI: https://www.tirerack.com/images/tire...plications.pdf
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