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purplehaze's Avatar
Join Date: May 2005
Location: Waiting to pass you, or Sebastopol CA
Posts: 349
Anyone run 335/30/18's?

I have an 87 930, and for track I run 315/30/18 Hoosiers in the rear.

Just wondering if the 335's will fit


87' 930TT
Old 01-17-2009, 10:18 AM
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Blackbird Pilot
Reaper930's Avatar
Join Date: Jul 2007
Location: The OC
Posts: 2,112
Not sure but I highly doubt it. I do know that 315 street rubber with the perfect offsets will barely fit, I flared my fenders and fit a 355/25/19 on 13.5" wide rims.
Reaper | The Outlaw 930 Hotrod Gruppe Fünf | The Baddest 934/5 Parts for the 911/930
Old 01-17-2009, 09:05 PM
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Crotchety Old Bastard
RarlyL8's Avatar
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 14,180
It depends upon the tire manufacturer. Track tires tend to run big so it may be a problem. My street Pirelli's run small and the 315/18's I have actually measure closer to 300mm. I have seen bigger 295's.
A more precise question would include the manufacturer that folks are using.
If staying with Hoosier then you can likely estimate the real-world size of 335's based on your 315's.

315/30-18 = 12.4w x 25.4T
335/30-18 = 13.2w x 25.9T

You will gain ~0.8" (6.5% increase) width and ~0.5" (2% increase) in height. That's a lot for stock 930 fenders.

RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 01-18-2009, 04:56 AM
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