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Join Date: Mar 2000
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s4 wheel offset

Need new tires on 88 S4. 2009 911 wheels with 57 ET front and 235 18 tires and rear 67 offset with 275 18s available. Will they fit and drive well?












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Old 01-06-2019, 07:17 AM
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Picked up the wheels in Miami today. Rears are actually 10 1/2" wide, 60 ET with 275 40 18 tires. Fronts are 8" wide, 57 ET with 235 40 18 tires. I will post pictures and results soon.
Old 01-08-2019, 04:58 PM
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The front tires are probably ok at 25.4 inches tall, but the rear ones calculate out at 26.66 inches tall and that is about an inch too tall.

If it were me I would go with 225 40 18 in the front at 25.09 inches tall, and 285 35 18 in the rear at 25.85 inches tall.

The Factory call out for tire sizes has them right at 25 inches front and rear, but I like them slightly taller in the rear. I also like to size the oval around an inch wider than the wheel width to allow for the tire bulge. Lower profile means less bulge.

I think the offsets will work ok for you.
Old 01-08-2019, 09:07 PM
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Thank you Jerry. The fronts are due for replacement soon. While the rears are a bit tall, they only have 3500 miles on them. I will watch them closely and keep your suggestion in mind as it makes sense. Need to replace H20 pump before driving.
Old 01-09-2019, 05:44 AM
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Had a little time today and installed tires on the left side. Fairly tight fit in rear and yes they are tall, but no issues. No clearance problems up front either. However, the front suspension sits too high due to a coil or perch problem yet to be sorted. Thanks again.
Old 01-09-2019, 06:48 PM
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Here are the stock and 997 wheel photo comparisons.
Old 01-11-2019, 07:36 PM
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Also running a 1983 manual with 245 40 17 front and 275 17 40 rear with no issues.

Old 04-23-2019, 05:34 AM
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