Boxster wheel fitment Options

[technicalninja]

Trying to wrap my head around what size spacers (range) I should be looking for to utilize stock 99 Boxster wheels on a "standard" flared 914.

Fronts are 17X7 ET 55
Rears are 17X8.5 ET 50

Any suggestions?

[Chris914n6]

In the front I use 21mm 944 spacers on 17x7 and that tuck stock fenders. Basically stay near the same offset as fuchs 15x7 @ 23mm. 225/45-17 tires

The rear is the same though I rolled a bit. (edit, 21mm + 5mm spacer)

You will need to add whatever the flares add to the spacer in the front, maybe subtract 1/2" for more clearance. Same for the rear except subtract the 1.5" wheel difference.

Side note: tires matter. I have a pair of both 8.5" and 9" that came with same size tires and the 9" is actually a bit smaller at the tread so it would tuck easier. It is what it is.

Also, tires hit the trailing arm before anything else, unless it's cambered alot then it's the chassis.