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Old 11-03-2010, 09:51 AM   #1
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could new tires be too wide?

I started renovating my 74 Argosy 28 that I picked up a month ago. The previous owner had new tires put on 100 miles ago. When I exposed the black plastic outer wheel well, there was a rub through at one of the 4 tires. The curb side rear. There is not much space between any of the tires and the inside of the wells. The owners manual shows 7.00x15.
That is also what the new tires are. But could they be wider causing the rubbing?
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Old 11-03-2010, 10:41 AM   #2
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I would doubt its the tires, however I would check the axle....they've been known to let the wheel and brake assembly move out when they get too old and the rubber has turned hard.

But, you say the problem is on the inside....in that case, the PO has most likely installed different wheels with offset to the inside. That would be my guess.
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Old 11-03-2010, 11:14 AM   #3
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I do believe they are to original rims. Even though they have full size hub caps, they have clips for the baby moons.
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Old 11-03-2010, 11:17 AM   #4
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It's been a long time, and so I might be wrong, but I owned a '74 Argosy and don't remember them having baby moons.
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Old 11-03-2010, 12:16 PM   #5
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I'd lean towards 'The wheels have an incorrect offset' if you know that you have the correct tires on the AS.
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Old 11-03-2010, 03:15 PM   #6
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How would I know if I have the correct rims? Are there any markings on them?
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Old 11-03-2010, 06:12 PM   #7
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They are supposed to be 0 offset, but it's hard to measure with the tire on the wheel. 0 offset means where the hub flange bolts to the wheel is exactly in the middle of the tire. Here's an illustration:

http://kmhafer.datsun510.com/wheel_offset.jpeg
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Old 11-03-2010, 07:09 PM   #8
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So if I have the 0 off set, could I go with a negative off set to get them centered in the wells? Better question: If they are 0 off set, why would they be that close to the inside? I mean I can not fit my finger between the tire and the inside but can fit my fist between the tire and the out side. This goes for both curb and road side.
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Old 11-03-2010, 08:01 PM   #9
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If it's to that extreem, I would really suspect you have the wrong wheels. It might be worth it to take one off, remove the tire, and measure it.
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Old 11-09-2010, 05:04 PM   #10
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OK, took wheel off camper. With a straight edge on the edge of the rim
Back of the lug holes to the outside is 3-1/4".
Back of the lug holes to the inside is 4".
So I guess this would be a 3/4" negative off set?

Going with a 0 off set and getting rid of this 3/4" would help.
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Old 11-10-2010, 06:00 AM   #11
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Or is that a 3/4" positive off set?

Does the tire need to be centered, or more room on the outside for changing a flat?
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Old 11-10-2010, 06:17 AM   #12
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Based on your measurements, your wheel is very wide. My 15" wheels are 6" wide and yours appear to be 7 1/4".

Offset is measured from the center line of the wheel. Since there is a 3/4" difference on yours, it would be a 3/8" offset and I believe yours are a positive offset.
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Old 11-10-2010, 07:08 AM   #13
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IMHO, it also sounds like the wrong wheels to me. Wrong offset and too wide.
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Old 11-10-2010, 07:12 AM   #14
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Quote:
Originally Posted by azflycaster View Post
Based on your measurements, your wheel is very wide. My 15" wheels are 6" wide and yours appear to be 7 1/4".

Offset is measured from the center line of the wheel. Since there is a 3/4" difference on yours, it would be a 3/8" offset and I believe yours are a positive offset.
I was thinking that also, but the measurement of width of a wheel is taken from the inside of the wheel, where the two tire beads go. Since Tiger measured his wheels from the outside, the wheels are narrower than he measured, but hard to say how wide. That is why I suggested he dismount one tire to get a true measurement. Anyway, it does appear the wheels are offset to the inside.
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