[Blacktemplar]

Originally Posted by aerobod

Although it is generally stated by tyre manufacturers to not use the standard summer tyres below 7C, here in Calgary I still drive the car on dry roads down to about -5C on the Michelin PS4S tyres. There is definitely less traction, with braking distances about 30% longer, but not really any worse than the average car in that case.

Careful use of the throttle is advisable, but my 260bhp Caterham requires more care than the M2, I still drive it down to similar temperatures on summer tyres, too.

Thanks aerobod, interesting to hear you're running down to -5C on summer rubber. My G87 is on PZeroes from the factory, which as far as I understand aren't quite as pliable in the cold as the PS4S. That said, I've never had any issues with the RFT PZeroes on the M40i.

I think the biggest issues for me here in Scotland are going to be the combination of wet/cold (0-5C) and the appalling road surfaces (well, those plus 500nm torque ) - I've driven in 3rd world countries that have better road surfaces than the UK

I suspect I'll drive 'cautiously' as we get into November, then most likely have to bite the bullet and get full winters. One of the other UK-based G87 owners is running crossclimates on a fairly torquey EV, and he reckons anything over 300bhp is broadly undeployable in the winter here.

Might not have to go square though - have found some Japan Racing rims in the staggered OEM sizes plus Yokohama BluEarth full winters for around £2K that might fit the bill.

EDIT: interesting to see the average daytime temperature here doesn’t drop much below 7C… though that limit is obviously impacted by rain/bad roads

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[GregW / Oregon]

If you decide to get tires more suitable for inclement but not severe conditions, consider: All Weather Tires. Not as much performance sacrafice as Winters.

[sgachko]

Originally Posted by GregW / Oregon

If you decide to get tires more suitable for inclement but not severe conditions, consider: All Weather Tires. Not as much performance sacrafice as Winters.

Great suggestion - I fit into that category and plan to use my stock rims on a set of continental extreme contact dws 02’s. Then I can buy a new forged set for the warmer months.

[Blacktemplar]

Originally Posted by sgachko

Great suggestion - I fit into that category and plan to use my stock rims on a set of continental extreme contact dws 02’s. Then I can buy a new forged set for the warmer months.

I assume you mean the DWS06? The 02 is a summer tyre.

Unfortunately DWS06 stock sizes (275/30/19 & 285/30/20) aren’t available in the UK

[sgachko]

Originally Posted by Blacktemplar

I assume you mean the DWS06? The 02 is a summer tyre.

Unfortunately DWS06 stock sizes (275/30/19 & 285/30/20) aren’t available in the UK

You are correct, typo (brain fart) on my end!

[rockstari21]

Originally Posted by GregW / Oregon

OEM fronts are et+20, so that fitment will move the face out 3/8”, which could be fine with Winters. The OEM rears are same offset but 1” wider, so you would need 12mm spacers to even them out.

Have the full set on order including the 12mm spacers but they still haven’t shipped from Future Classics 10 days post-order. Car I believe is set to be delivered this weekend and I’d like to mount the winter setup before delivery. Any issues with temporarily running the square setup without the rear spacers? Or will the difference in fitment throw off the ride/I should wait until the spacers are in to mount the winter setup?

[GregW / Oregon]

Spacers are not required; mainly aesthetic.