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I have a 2004 C5 and am thinking of buying a 2017 LT1 coupe. One of the questions I have about the C7 is the summer-only tires. As I live in the northeast and this will be my only car, not driving in cold and occasionally light snow conditions is not an option. I have gotten some conflicting information (mainly from dealers) about driving in low temperatures and inclement weather. While I'm not thrilled with the added expense, for my own peace of mind I'm considering changing to Michelin all-season, run-flat tires upon taking delivery. (I have these Michelins on my car now and I'm satisfied with them.) Has anyone else done this? If so, how much is the handling/performance affected - I will not be racing the car?
Also, is there a secondary market for essentially new summer-only tires?
Many threads about this. I, and other C7 owners, have switched to all season tires. Recently Michelin has released a runflat version of the Pilot Super Sports. I am running non runflats, Continental DWS 06s, that I installed immediately after delivery. Sold my Michelin runflats to a fellow with a C6.
Last edited by rmorin1249; Dec 3, 2016 at 11:22 AM.
I have a 2004 C5 and am thinking of buying a 2017 LT1 coupe. One of the questions I have about the C7 is the summer-only tires. As I live in the northeast and this will be my only car, not driving in cold and occasionally light snow conditions is not an option. I have gotten some conflicting information (mainly from dealers) about driving in low temperatures and inclement weather. While I'm not thrilled with the added expense, for my own peace of mind I'm considering changing to Michelin all-season, run-flat tires upon taking delivery. (I have these Michelins on my car now and I'm satisfied with them.) Has anyone else done this? If so, how much is the handling/performance affected - I will not be racing the car?
Also, is there a secondary market for essentially new summer-only tires?
You absolutely CAN NOT drive the factory tires below 40 degrees period! The rubber will crack.
LOL . . . I've done a number of stupid things too, "without any problems," but fortunately got smarter as I got older.
Yes, you can drive it like a "granny," but the simple fact is that the summer PSS tires will have little or no grip in sub-freezing temps. Yes, you can drive with minimal grip and escape with no problems, as long as no one else gets in your way, but you're pushing your luck.
It's kinda like saying, "I've been smoking for 30 years with no problems."
LOL . . . I've done a number of stupid things too, "without any problems," but fortunately got smarter as I got older.
Yes, you can drive it like a "granny," but the simple fact is that the summer PSS tires will have little or no grip in sub-freezing temps. Yes, you can drive with minimal grip and escape with no problems, as long as no one else gets in your way, but you're pushing your luck.
Not worth the risk driving on summer tires in near freezing temps. It's illegal in much of Europe for good reason. Ask me how I know.
I drive it year round, 6 months on all-seasons, and 6 months on the PSS. Unlike you, I actually get to enjoy my car in a spirited fashion during the winter months, because I don't have the reduced traction on cold pavement that you do.
I drive it year round, 6 months on all-seasons, and 6 months on the PSS. Unlike you, I actually get to enjoy my car in a spirited fashion during the winter months, because I don't have the reduced traction on cold pavement that you do.
I don't drive mine most of the winter by choice. But don't give false information. Read your owners manual. These tires won't crack under 40 degrees. Possibly under 20. That's all I'm saying.
I have a 2004 C5 and am thinking of buying a 2017 LT1 coupe. One of the questions I have about the C7 is the summer-only tires. As I live in the northeast and this will be my only car, not driving in cold and occasionally light snow conditions is not an option. I have gotten some conflicting information (mainly from dealers) about driving in low temperatures and inclement weather. While I'm not thrilled with the added expense, for my own peace of mind I'm considering changing to Michelin all-season, run-flat tires upon taking delivery. (I have these Michelins on my car now and I'm satisfied with them.) Has anyone else done this? If so, how much is the handling/performance affected - I will not be racing the car?
Also, is there a secondary market for essentially new summer-only tires?
I don't drive mine most of the winter by choice. But don't give false information. Read your owners manual. These tires won't crack under 40 degrees. Possibly under 20. That's all I'm saying.
You apparently don't read very carefully either. I've never once said a thing about "cracking" tires, although others have. You should choose who you quote more carefully and refrain from making false allegations.
In all of these threads I've simply said that traction on the PSS summer tires begins to degrade at about 50F, goes significantly downhill from there, and that is not a good thing. All one needs to do is spend $1K for a set of UHP all-seasons, and one has excellent traction again on cold pavement, absent frozen precipitation.
Yes, read your owner's manual:
Summer Tires High Performance Summer Tires
This vehicle may come with P245/
40ZR18 and P285/35ZR19,
or P245/35ZR19 and P285/30ZR20
high performance summer tires.
These tires have a special tread and
compound that are optimized for
maximum dry and wet road
performance. This special tread and
compound will have decreased
performance in cold climates, and
on ice and snow. We recommend
installing winter tires on the vehicle
if frequent driving at temperatures
below approximately 5°C (40°F) or
on ice or snow covered roads is
expected. See Winter Tires on
page 10-44.
The bulletin is still only referencing the Z06, but I did notice that it said "2014-2017" when I read it this time. Those '14 Z06s must be a collector's dream.
Reduced traction is absolutely a huge concern at lower temps, but for the rest of us (non Z06 cup tire) C7 drivers, the cracking is still a concern only below 20F.