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husker boxster · 06-07-2008, 06:25 PM

First off, I believe the general concensus is 11" wheels will not work on a Boxster. Others can confirm or deny that.

The factory offsets for 18" 987 wheels are 43mm front and 57mm rear. If the 997TT wheels are factory Porsche wheels, they'll have 2 numbers by the valve stem of the wheel. One number's the width and the other number's the offset. You may be able to use spacers to get to the 997TT wheels to Boxster offsets, but you don't want to get too wild with spacer widths (probably no bigger than 15mm). Plus you'll need to buy longer lug bolts if you go the spacer route.

Better find out what the offsets are before you spend any hard earned $$$.

06-07-2008, 06:25 PM	#2
husker boxster Registered User Join Date: Sep 2006 Location: Omaha Posts: 2,867	First off, I believe the general concensus is 11" wheels will not work on a Boxster. Others can confirm or deny that. The factory offsets for 18" 987 wheels are 43mm front and 57mm rear. If the 997TT wheels are factory Porsche wheels, they'll have 2 numbers by the valve stem of the wheel. One number's the width and the other number's the offset. You may be able to use spacers to get to the 997TT wheels to Boxster offsets, but you don't want to get too wild with spacer widths (probably no bigger than 15mm). Plus you'll need to buy longer lug bolts if you go the spacer route. Better find out what the offsets are before you spend any hard earned $$$. __________________ GPRPCA Chief Driving Instructor 2008 Boxster S Limited Edition #005 2008 Cayman S Sport - Signal Green 1989 928 S4 5 spd - black 1987 928 S4 - Granite Green Metallic (Felsengrun)