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Cayman Tires & WheelsDiscussion of Tires, Wheels, Suspension, etc.
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I am taking delivery of my 07 CS this Saturday. Since I am importing the car from the US into Canada, I'll have to drive it some 250 miles to Montreal. The weather looks OK at -4C (25F) and no snow/ice. My question is whether driving with summer tires will be OK? Any tips as to what to expect in terms of driving characteristics of the stock tires in cold weather? Once in Montreal my CS will likely to be garaged until the weather is more spring-like - hopefully soon!
ff-On my trip last October from the annual Croctobertfest in Kansas City to Santa Fe (where I actually had dinner with Santa Fe) I was driving in temperatures in the 20-30 degree, F range. The tires will not be grippy at all, so while I think you'll be fine is there's no snow or ice in the road, make sure that when you're not going in a straight line remember that your cornering ability will be greatly diminished at those temperatures, and even when going in a straight line, allow a lot of extra space between you and the cars in front of you - the tires will not grip when you want to stop. In other words, be careful and don't push it - there will be plenty of time to play with your car come Springtime.
flying fish- as long as there is no snow or ice, driving shouldn't be a problem. Just remember not to take corners too fast and accelerate too quickly. I have had no problems driving in cold weather in Toronto, but with a bit of snow, the warning lights blink like x-mas lights. If there is snow and you are stuck, turn PSM off.
I too was going to buy a car from the US as well but a friend told me that it is difficult to get serviced in Canada...dealers not willing to service a US car.
At the Toronto Auto Show y-day, i spoke with a Porsche representative about this subject and he basically told me the same thing.
It will also be more difficult to sell the car used from what i've been told.
PSM - Porsche Stability Management
While it can’t overcome the laws of physics, the revolutionary Porsche Stability Management (PSM) system does lend an added degree of balance and control to the Cayman’s mid-engine driving dynamics, inspiring surefooted confidence in corners and extreme situations.
A standard feature on the Cayman and Cayman S, PSM continuously monitors steering input, road speed, yaw velocity and lateral acceleration to calculate the actual direction of travel. If the car begins to steer off line, PSM instantly intervenes with precision brake inputs on individual wheels to help bring the car back onto the driver’s intended path.
If braking alone isn’t enough to correct the vehicle’s cornering line, PSM then calls on the Cayman’s engine management system, adjusting engine output as needed to help stabilize handling. PSM can also compensate in an instant for mid-corner changes in load resulting from deceleration or braking. When Sport mode is selected with the optional Sport Chrono Package, PSM’s threshold for intervention is raised, allowing for greater driver involvement. If you prefer driving without automatic PSM assistance, the system can be set to standby at any time. In this case, it will only intervene under heavy braking, where both front wheels exceed the ABS threshold.
For all of its technical ability, PSM goes virtually unnoticed in everyday driving situations, preserving the Cayman’s natural agility.
I had some bad experience with summer tires and sub-40F degree weather. The moment any kind of moisture is added in those temperatures, things turn bad.
Snow... don't bring back bad memories. Lets just say that after the first incident I bought winter tires real quick.
I will be swapping mine on stock rims every season. I like stock rim and about $80 each time they swap 'em is worth it to me until I feel I want to spend $$$ for some fancy rims for summer tires.
__________________ '07 Porsche Cayman S: de-snorked... more mods to come. '05 Dodge Magnum RT: catback, high-flow cats, custom intake, projector headlights, SC FlashPaq... and on and on.
Blog: leanstartups.com
apsinkus- i heard that it's not good to swap tires onto the same rims because the chance of damaging the rims and somehow damages the tires as well. You might be better off buying a cheap set of rims for winter and save that $80.00 for the swap.
[quote=cayman_ess;110431]flying fish- as long as there is no snow or ice, driving shouldn't be a problem. Just remember not to take corners too fast and accelerate too quickly. QUOTE]
Please help me to understand this summer tire issue. Does this have to do with the rubber compound? If it does, and summer tires loose their grip in cold weather then they must be harder than winter tires. If this is true, then conversely, winter tires should be softer to provide a better grip. So, if winter tires are softer, they should offer more grip in the summer, Right?
I think the issue with summer tires may have more to do with the design of the tred pattern than with the compound of the rubber.
My plan was to make a trek from my delaer in New Hampshire to Montreal, Quebec this Saturday. The weather looked positive until tonight - now calling for a chance of snow flurries. Its freaking me out the drive. I agree that as long as there is no snow/ice and I drive cautiosly, I should be OK. With a bit a snow falling, will this be a suicide mission? I'll be monitoring the weather very carefully for the weekend.
By-the-way, I was hoping for a March delivery - the car just came earlier than expected! I could buy winter tires in NH but my intention was not to drive in the winter and there is a logistical issue of trying to get the summer tires back to Montreal.
cayman_ess - I have not heard of specific problems with warranty repair of a US Porsche in Canada. The warranty is valid throughout NA. I got the impression from the dealer in the States that many Canadians have gone this route. And when the Canadian dollar was much weaker (remember when it was approaching US$0.60 = CAD$1) folks from the States were buying cars in Canada and importing them into the US. In addition there are many Americans actually settling in Canada. It wouldn't make much sense for Canadian dealers to deny warranty repair to US Porsches owned by new residents. In the end, I am sure the Canadian dealers are not pleased but I can only imagine they are obliged to honor the warranty.
I swap out the stock wummer Michelin Pilots and Michelin Alpin snow tires on the "S" 18" wheels. If done be a professional, there is not damage to the tire or wheel. They use lots of lube and take their time. Before the swap the shop (Currie's in DC) manager and I look at all four wheels to confirm there are not scratches. Their policy is "If we scratch it, we've bought it." Good tire shops will routinely work this way.
Porshce and Michelin say 40 degrees Farenheit is the magic number. The differences in the two tires are in the tread and the compound.
I swap out the stock wummer Michelin Pilots and Michelin Alpin snow tires on the "S" 18" wheels. If done be a professional, there is not damage to the tire or wheel. They use lots of lube and take their time. Before the swap the shop (Currie's in DC) manager and I look at all four wheels to confirm there are not scratches. Their policy is "If we scratch it, we've bought it." Good tire shops will routinely work this way.
Porshce and Michelin say 40 degrees Farenheit is the magic number. The differences in the two tires are in the tread and the compound.
Mojo, what do you mean compound? Are summer compounds softer or harder than winter?
