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Old 04-06-2017, 05:26 AM   #1
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Wheel Offset question

Good Morning fellas,

I'm heading to a track day this weekend and I purchased a set of wheels a while back with NT01s that I stupidly didn't mount on the car to check fit.

They are as follows:

2000 Carrera 4 wheels

Front:

17x7, ET55 Tires are 225 NT01s

Rear

17x9, ET55 Tires are 255 NT01s.

Do you all think these will fit without rubbing the strut?

Thanks very much.

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Old 04-06-2017, 06:05 AM   #2
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Quote:
Originally Posted by Quadcammer View Post

Front:

17x7, ET55 Tires are 225 NT01s

Rear

17x9, ET55 Tires are 255 NT01s.

Do you all think these will fit without rubbing the strut?

Thanks very much.
The OEM front size for Boxsters in 17 is 17x7 ET 55 so that is an exact match

The OEM rear 17 for Boxsters is 17x8.5 ET 48 or ET 50 (All I have ever seen is 50)

Your new wheel is 17x9 ET 55, so according to this wheel offset calculator:

Wheel Offset Calculator | 1010Tires.com Discount Online Tire and Wheel Store

The 17x9 ET 55 has 11mm less inner clearance than a 17x8.5 ET 50 wheel
The 17x9 ET 55 wheel has 9mm less inner clearance than a 17x8.5 ET 48 wheel

Let's look at some of the other approved sized for 986 Boxsters, there is also the 18x9 ET 52 wheel that is OEM with some Boxsters, the 17x9 ET 55 wheel compared to this has only 3 mm less inner clearance. The extra inch of diameter may give some more clearance, but I think you may be all right, and maybe would want a 3 MM or other small spacer.

This is a timely question because I am looking for a pair of the Carrera 2 twists 996.362.128.00 in 17x9 ET 55 that came on some 996s because I want to run them in the back and run a pair of 17x8.5 ET 50 in the front. Let us know how it fits!

I have got some 5 mm 5x130 aluminum spacers from eBay, but no extended bolts, but I think there is a set of OEM Porsche 5 MM spacers with bolts on RL for sale right now, you might want to grab some on the cheap in case you do need a little extra spacer when you go to run those wheels.

From other threads on here, I think you will be OK without a spacer.

Steve

PS Did you get the set of wheels with tires that came with an extra used back tire? If so I have 3 other NT-01 (I corded the 4th), I would make you a super deal if you wanted my 3 tires to make a 2nd set, or maybe I could trade you something or outright buy that shaved back tire?

Edit: here is a link to a thread running that size in the rear:
http://986forum.com/forums/intro-porsche-boxster/13196-996-wheels.html

Says he has less than a finger width of thickness between the strut, so it sounds like it did fit But it was close.

Last edited by steved0x; 04-06-2017 at 06:09 AM.
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Old 04-06-2017, 06:39 AM   #3
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nah, I actually got a screaming deal on this set out of maryland so I don't have the extra shaved unit.

thanks for your post, I think i'll be ok, but I could always cannibalize the front 8mm spacers off my 997 with its longer bolts in a pinch.
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Old 04-14-2017, 06:13 PM   #4
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Cool, let us know how the track day goes!
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Old 06-08-2017, 07:15 PM   #5
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Bump, how did that rear fitment work for you? I found a used Nitto and I might try and get an extra weekend or two out of my old ones on my set of Cup II replicas which have a 17x9 ET 55 rear.
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Old 06-09-2017, 07:48 AM   #6
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Thanks for the follow up. It worked, but the clearance to the strut was too close for comfort. I have since added 12mm spacers and the fit is much better, looks meaner too.
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Old 06-09-2017, 07:51 AM   #7
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Great, thank you for the follow up, I bet with 12mm spacers they look tough!
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Old 06-15-2017, 09:11 PM   #8
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I have a small spacer to clear strut with my 19x11's. But nothing too fancy. Just enough to shove 285x35x19's inside the fender wells with some Rolling.

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