[linderpat]

Okay, I got my Cup 1's finally. Now I need to shoe them. They are 7.5 front and 9 rear, 17" wheels. What tire selections work well? I'd like more thickness in the rear, which obviously I'll get anyway by virtue of the wider rear wheel.

Thanks for your thoughts all!

[Bertrand Daoust]

Just bought new (to me) wheels.
17'' Cup II.
8'' ET70 front and 9'' ET 55 back.
I want to stay stock so I went with 225-45/17 and 255-40/17.
Continental EXTREMECONTACT DWS 06 PLUS.

Have not received the tire yet.

[worf]

... stock so I went with 225-45/17 and 255-40/17.

Concur with stock 17” size.

@linderpat you have questions as to size or brand?
ABS or not?

[Bertrand Daoust]

Yes stock size for the 17'' GTS wheels. Not 16'' GT/S4 wheels.
But close enough for me.
0.4% diameter difference in front and 1.2% in the back.

I can't wait to see how the car drives with the new tires/wheels...

[maddog2020]

what is the difference in offset?

[linderpat]

no ABS. These are for my 85. Wheels are Cup 1, 7.5 X 17, 52 ET front, and 9 X 17 rear, 47 ET.

Need to know tire size. Brand is something I'll select after knowing what size to get.


PS - Bertrand, Cup 2's are different offsets from Cup 1's. Tire sizes may still be the same though.

[Bertrand Daoust]

My front wheels are not GTS stock wheels. But winter wheels for the turbo of those same years (if I recall correctly).

Offset on mine:
Front:70mm on 8''.
Stock (design 90 and both GTS stock Cup wheels) are 65mm on 7.5''

Back: 55mm on 9''.
Stock design 90 is 52.3mm on 9''. Both GTS stock Cup wheels are 55mm on 9''.

I took this information on The Registry "Wheel Option" section.
Hope it's good...

[worf]

no ABS. ...Tire sizes may still be the same though.

225/45 on a 7.5x17” front is the stock 928 GTS front.
255/40 on a 9x17” rear.

With no ABS you can play with sidewall height with no fear of making ABS lose its mind.

[Schocki]

I drive the stock 17" rims and tires on my GTS. Michelin Pilot Sport N3 are the way to go. Very good tire with very good grip wet or dry,

[Adamant1971]

My current summer performance tire of choice is the Firestone Firehawk Indy. It’s a re-branded Potenza Re003 from Japan. Have them on my Golf R that I just traded in and on my 928.

I have conti dws06 on our van and also had those on my 9-5 Aero. They last along time and even work well when at the wear bars in the winter. But IMO the sidewall is too soft for a 928. But if your looking for an all season option they are a great AS tire.

In the past I have run the following summer tires on my 928 and prefer the Firestone hands down.
-Potenza re-70
-Continental extreme contact sport
-potenza s0-4

[Sazerac]

I also really like the Michelin Pilot Sports. Since I only have 16" wheels on my cars, I have the Rossos, and they are perfectly acceptable. But, I like the Pilot Sports better. They seem to be both stickier and quieter. Just my 2 cents.

[Gary Knox]

If you want to drive the car in weather other than 'warm/hot roads', where the Pilot Sport's have great grip, I recommend considering the Pilot A/S 3+. Good handling, good traction in all 4 seasons we have in PA, I've had them on several GT type cars (including the AM, MB, and '94 GTS in the list below), and for street highway, I really like them. Not what I'd put on a track car, or maybe a 4-5 month driver. But, I'm a big fan of Michelin, whatever type tire I need.

Integrity statement: I spent about 4 years interacting technically with US and European tire companies back in the era when Michelin was first introducing their 'radial' tires into the US market.

[Adamant1971]

^
You can never go wrong with a Michelin.

I might try them next as I seem to burn through rear tires in about 10k Km’s. Lol

[worf]

... I seem to burn through rear tires in about 10k Km’s. Lol

You’re doin’ it right then