My schedule has always been, winters on by Thanksgiving, and summers on by Easter.
New here but thought I would add my two cents anyway.
+1 on the timing.
Have a 2018 R with the Continental tires. Saw the first very minor snow in Minnesota, about a half inch of wet stuff. Took the car to the store and on the way back slid past the driveway. Steering inputs were being ignored.
When I did get it in the garage I removed the 235x35x19 Continentals and installed the 225x45x17 Michelin Ice xi3's I had ordered from Tire Rack.
Wish I had done more research before somewhat blindly following the Tire Rack recommended wheel and tire package. The Continentals are listed as 816 revolutions per mile [rpm]. The 225x45x17 are listed as 833 rpm and as such the 'low tire pressure' came on and the speedometer seemed to be off.
Resolved the 'low tire pressure' issue by following the recommendations on the console but still think the speedometer is off ... reading faster than what I think we are actually going.
Had I done more research I would have gotten 215x50x17 which is (a) 815 rpm ... Continental value ... and (b) a narrower and taller tire, which I feel would be better for winter driving.
Anyway, it currently is what it is, speedometer error and all.
Anyone know how to tell the system that the tire size has changed? Or, rather than brute force 'telling it the whiles are smaller', it maybe it is smart enough to figure it out on its own based on GPS speed vs 'wheel rotation calculated speed' and adjust the displayed speed over time?
The other challenge is coming up with the correct tire pressure for the winter tires. Tire Rack says 'look on the manufacturers sticker on the door'. I say 'it doesn't list a setting for the tire and wheel size combination your website recommended. They say 'look on the manuf...' You see a pattern here?
Being a pessimist I am assuming Volkswagen will respond with 'you are using an unauthorized wheel and tire combination' and Michelin will like wise provide a litigation avoidance response of 'ask the vehicle manufacturer'. I had them at 35 and the wife thought the ride was great but I was concerned it was way below the 39 for the Continentals. I went to 38 and the wife thought it now has the same terrible ride the other cars have ['15 Scion FRS with TRD springs and swaybars and a '93 MR2 turbo] so I am looking for suggestions as to what, from an objective perspective, might be the correct pressure for ugly weather handling and tire life.
Thanks,
Arvid
