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How big of a tire will fit?

How big of a tire will fit the rear of a 1973 2.0 914?
Thanks
Paul
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Old 03-19-2007, 11:39 AM
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how much tire rub do you want?

205-55-15 Yoko ES100 fit my stock fenders just fine.

your results may vary...
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Old 03-19-2007, 12:16 PM
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Which rims? 195/65-15s on stock 914 rims will fit in the rear of just about all 914s with no trouble. 205/60-15s will fit on most cars, but on some they will rub a little on one side or the other. The "lip" of the rear fender may need to be mashed flat, or the fender might need to be pulled out a little to clear.

If you're using Bug rims, it will be hard to fit anything wider than 165s under stock fenders.

You can make a decent estimate by checking your current tires. The first number in the tire size is the nominal tire width. The tires generally go up in size in steaps of 10mm, which is just about 3/8". Figure half of that will be toward the inner fender, and half toward the outer fender. So if you're going from 165s to 205s, you'll need 20mm (~3/4") more room on each side of each tire than what you have. I would leave about 1/4" extra clearance for safety margin, because things do indeed flex somewhat under load...

--DD
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Old 03-19-2007, 05:48 PM
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keep in mind that virtually no 914 left the factory with the fenders being exactly the same as another car. That being said, 195/60/15 will be your best bet. you may be able to fit 205/60/15 with a little fender rolling.
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Old 03-20-2007, 06:35 AM
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What about 16's? Does that allow for a wider tire (as it moves the "bulge" further up into the fenderwell)?
Old 03-20-2007, 07:17 PM
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Not to my knowledge.

--DD
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Old 03-21-2007, 06:37 AM
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Quote:
Originally Posted by Dave at Pelican Parts View Post
If you're using Bug rims, it will be hard to fit anything wider than 165s under stock fenders.
What do you consider to be Bug rims?

I've got 8-spoke EMPI-style wheels made by American Eagle. I need some new tires and am trying to figure out what will fit. Dunlop 165R15's are on the car now. I estimate that I have about 1/2" of clearance in the rear.

On a related noted, I discovered that the lug bolts on the car now have a 26mm shank. From what I've read, I believe I should have a 38 or 39mm shank. Can anyone confirm this? Is it safe to say that the shorter 26mm bolts should be used only for the stock steel wheels?
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Old 10-26-2007, 09:17 PM
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Bug wheels have less backspacing than the 914 wheels do. The stock 914 wheels have just under 5" of backspacing, while the Bug wheels are closer to 3" I think. The 914 wheels sit further into the wheel wells, and the Bug wheels further out.

Sounds like you have Bug wheels. If you have 1/2" of clearance between the 165-width tire and the outer fender, you realistically have room only for 175s, maybe 185s if you put some negative camber in the rear.

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Old 10-27-2007, 09:55 AM
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I've run 215/65/15's on stock steel wheels on mine since the late 80's with no problems. Had to flatten the fender lip on the rear.
Old 10-27-2007, 01:47 PM
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ttwitc, can show me a photo of your car with the 215s?

The 205 or even the 215 are okay on the stock width 5.5 rims?
Old 11-06-2007, 07:10 AM
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