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Message: When to change to winter tires

Changed By: Laz
Change Date: November 18, 2015 05:26PM

When to change to winter tires
Daytime temperatures have been dropping into the low 50s recently, and I've noticed the "low speed full-lock front tire skipping" beginning to occur. Porsche recommends going to non-summer tires when it's below 45º, but it seems to me the skipping is indicating an upper temperature threshold for compromised overall traction. As the forecast is showing consistent ≈ 45º daytime highs for the next several days, I think it's time to change to the PA4s. (Summer fronts: N-spec Goodyear F1 Asymmetric 2, 235/40-19s on a 981 Boxster S)S. Something like 30-35,000 miles on the summers, so maybe compound aging is a factor.)

Original Message

Author: Laz
Date: November 18, 2015 05:24PM

When to change to winter tires
Daytime temperatures have been dropping into the low 50s recently, and I've noticed the "low speed full-lock front tire skipping" beginning to occur. Porsche recommends going to non-summer tires when it's below 45º, but it seems to me the skipping is indicating an upper temperature threshold for compromised overall traction. As the forecast is showing consistent ≈ 45º daytime highs for the next several days, I think it's time to change to the PA4s. (Summer fronts: N-spec Goodyear F1 Asymmetric 2, 235/40-19s on a 981 Boxster S)