911/928 Wheels

[robinoz]

Do 928 wheels differ from 911 in fitment. There are some 16" BBS RS near me advertised for a 928 under 500 notes. The rears are 16x9 about offset 50 and have the correct pcd, fronts are 16x 7 maybe. Does the hub centre/anything differ between these two cars?

[robinoz]

Anyone know no?

[domster]

PCD and stud pattern the same; hubs probably so as well. Big problem is offsets. Why not try them if they're near you? I'm sure the seller would oblige. You only need to try a front and a rear; takes 15 mins.

[domster]

PS also check caliper clearance, but depends on how big your calipers are. Old 911s had small calipers anyway. 928s tended to have big ones.

[barchetta_boy]

Hi,

You will find that pretty much any Porsche wheels will fit... however beware. The big problem wth 928 wheels is front offsets. On the rear if it fits, you can use it. 7J up to 9J is fine on most models.

On the front, the 928 requires offsets of 65. On genuine Porsche wheels this is stamped on the outside of the wheel near the valve after the letters 'ET'. Wheels that have come off 911s will have offsets of 47 to 52 which changes the 928's steering geometry.

Personally I am currently using genuine Porsche Design 90s on my 928S2 which have a front offset of 52, and I've not noticed any problems (it's supposed to cause instability under heavy braking) but I would definitely not go below 52.

Joel