First Mod - Winter Tires: Michelin Pilot Sport A/S 3+ 285/35ZR19

[ChipG]

Hi all,

Following up on my new car thread, I now have winter-friendly tires mounted. I went with Michelin Pilot Sport A/S 3+ tires in 285/35 at all four corners. Overall diameter change and speedo/odo impact should be minimal. SC2 rear tires are 27.4" tall and do 758 revolutions per mile, these are 26.9" tall and do 774 per mile, so I should see readings about 2.1% higher than stock (about 1.2mph high at 60mph). Quick measurements before and after didn't show significant ride height differences - about half an inch lower in back as expected, basically no difference in front (stock front tires are 27.1" tall, so a 0.2" difference). I haven't done much driving with them yet, but I will say tramlining is clearly much reduced, which is nice.

A few photos before and after (first in each pair is stock tires, second is A/S 3+). Last pic is technically my second mod - a new license plate frame on a car still grubby from the road trip as it's been too cold to wash it...

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[Blong]

Nice. I was considering these tires as well. Photos are really helpful. Thanks

 

[ChipG]

Nice. I was considering these tires as well. Photos are really helpful. Thanks

I'm glad they help. The 285s don't seem overly stretched to my eyes if that's something you're wondering about.

 

[68Stang]

Thanks so much for the info and for the detailed photos! Very helpful as I'm in the same dilemma and trying to decide which direction to go.
BTW hello from just a few miles south in the Rocket City.

 

[compprep]

27.4" tall and do 758 revolutions per mile, these are 26.9" tall and do 774 per mile, so I should see readings about 2.1% higher than stock (about 1.2mph high at 60mph).

A smaller tire needs more rev's per mile which means your speedo reads SLOWER, not higher. Speedo at 60, really going 58.8 per your example.

 

[ChipG]

A smaller tire needs more rev's per mile which means your speedo reads SLOWER, not higher. Speedo at 60, really going 58.8 per your example.

I think we're saying the same thing. If road speed is 58.8 and my speedo says 60, my speedo is reading higher than actual speed.

 

[cdtx]

A smaller tire needs more rev's per mile which means your speedo reads SLOWER, not higher. Speedo at 60, really going 58.8 per your example.

I think that is what he meant, as in the speedo is reading higher (than "stock") and his actual speed is lower.

 

[Matti777]

I just put 285/35/19 AS3+ on 10 inch wheels. They fit nicely and have good rim protection.

 

[sotek2345]

I have the exact same setup on my girl, but still put her away for the winter. But then Upstate NY winters are a bit harsher than yours!

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