Winter Tire Size Question

[Jetpilot3]

I'm driving my NC1 during the winter and I understand the stock sizes are 245/35R19 and 305/30R20s. However, I have a friend giving me a free set of brand new Michelin Alpin 4s with the following sizing:

255/35R19
295/30R20

Will I be okay on the stock rims?

 

[leov]

You'd be going one size smaller in the rear and one bigger in the front. So a double disparity. With the electric motors driving the front axle, not sure if the computers are programmed for specific wheel/tire diameters. I personally wouldn't do it.

 

[Jetpilot3]

Well in the past on my 911's the standard tire size was 305 and 295 was common on the rears for snow. You want a narrower tire.

I'm more so wondering about rim width

 

[utekineir]

The 8.5" oem fronts and 11" oem rears will be fine width wise. 10mm from oem isnt a massive change in either direction.

 

[Jetpilot3]

Yes thanks for the replies as my tire dealer said no issues fitting these sizes onto the stock OEM wheels.

Now ready for winter!

 

[Honcho]

Yes thanks for the replies as my tire dealer said no issues fitting these sizes onto the stock OEM wheels.

Now ready for winter!

FWIW I ran all seasons one size smaller on my GT-R and the ATTESA-ETS AWD system was still happy. I think you'll be fine unless the SH-AWD is really finicky.

 

[patb609]

I have a set from my NC1 in OEM sizes available if you are still looking for tires. More than happy to work out shipping.