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Need tire size help

Those BBS Racing wheels just came in and I measured the sizes. Fronts are 16x9 and rears are 17x12. What sizes are you guys running on similar widths?


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Bryan O.
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Old 10-22-2007, 10:37 PM
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Are you looking to run street tires or race tires?
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Old 10-24-2007, 02:28 PM
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Don't think there is anywhere to race on Oahu. Just drifting at the stadium.
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88' 930
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Old 10-24-2007, 02:52 PM
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Drifting a 930? Not easy!
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Old 10-24-2007, 06:38 PM
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I'm looking at street tires. I did think about Nitto 555r drag radials. I guess the rears should be 315/35/17 and the fronts 245/45/16. I'm just hesitant about tires that wide up front. How's the steering effort?
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Bryan O.
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Old 10-24-2007, 09:37 PM
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245/40/17 on 9"ers are fine up front. If you have a smaller sport steering wheel the steering effort can be quite a bit in the parking lot but at speed it's fine and you should love the turn-in. I ran 275/17 up front on our RSR clone and THAT was a workout on the forearms for sure! LOL ;-)

Me thinks 12" width in the rear is gonna be really tight - hope you got the offset right. Biggest I've fit on a 930 and the RSR clone were 315 on 11" and even then I seem to remember we had to move the oil line in a bit. Perhaps others have done it without rubbing...
Old 10-24-2007, 11:18 PM
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Originally Posted by pdqcarrera View Post
245/40/17 on 9"ers are fine up front. If you have a smaller sport steering wheel the steering effort can be quite a bit in the parking lot but at speed it's fine and you should love the turn-in. I ran 275/17 up front on our RSR clone and THAT was a workout on the forearms for sure! LOL ;-)

Me thinks 12" width in the rear is gonna be really tight - hope you got the offset right. Biggest I've fit on a 930 and the RSR clone were 315 on 11" and even then I seem to remember we had to move the oil line in a bit. Perhaps others have done it without rubbing...
I just measured the wheelwells and the oil line will be really close! The wheels came off a 930 race car in LA so I figured the wheels would fit easily. Then they showed up and I saw they were 12s.
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Old 10-24-2007, 11:28 PM
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Awww, no joy! I need skinnier wheels. -2" in the rear and -1" in the front. Looks like I need 4" outers for the rears and 3" for the front.
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Bryan O.
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Old 10-25-2007, 11:29 PM
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Bryan,
I guess your option might be to change out the halves?
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If you are traveling at the speed of light & turn on your headlights, does anything happen?
Old 10-26-2007, 12:07 AM
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Yup. I have double checked, triple checked and quadruple checked. I'll need 3" outers for the front and 3.5" outers for the rear. I could go with 7.5" inners on the rear, too, but I'll see how these work out.

I removed the spacer in the rear and needed to leave the front one to clear the calipers.
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Bryan O.
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Old 10-26-2007, 04:12 AM
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Bryan,
Do you have a source for your BBS halves? What will it be costing, about 2-$300/wheel?
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88' 930
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If you are traveling at the speed of light & turn on your headlights, does anything happen?
Old 10-26-2007, 12:23 PM
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I have a source and it is @ $100 per outer.
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Bryan O.
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Old 10-26-2007, 02:39 PM
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