Tires and Cold Weather

  • wallyp
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26 Nov 2012 08:16 #12658 by wallyp
Tires and Cold Weather was created by wallyp
Those of us who can drive our cars in the winter need to remember:
- It is time to check the tire pressures on all of our vehicles - they will be low.
- If your 928 has high-performance tires, you need to know that they have much lower traction below fifty degrees F, and are hockey pucks below freezing. Drive cautiously until the tires warm up. They are almost unusable in snow or ice.

The 928 can be an excellent winter car - but only with all-weather or snow tires.

Wally Plumley
928 Specialists
www.928gt.com

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26 Nov 2012 08:25 #12659 by srshaw3
Replied by srshaw3 on topic Tires and Cold Weather
Good points, thanks Wally.
All season tires on mine, but it won't see much snow :)

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26 Nov 2012 12:30 #12661 by xstepson
Replied by xstepson on topic Tires and Cold Weather
My GTS came from Cali. I had a low tire last January on one of my rear Sumitomos and aired it up. It was actually below freezing when I did. On the way to the GTG breakfast, the inner sidewall separated and I had huge "bubbles" on the inside of the tire. I made it to the GTG and help that was there. I had to borrow a wheel and tire to get home.

I was gonna complain to Sumitomo, but after I looked at the website for these tires in detail, there was a note that these tires are not meant to be driven in below freezing weather. I couldn't very well complain since it was below freezing. Apparently, this was one of the first times that the car had been in below freezing temps.

All I'm saying here is check your tires and make sure that you know what you're driving on. I love these tires in the Summer, but they can't be relied on in the winter.

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  • the flying scotsman
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26 Nov 2012 14:23 #12663 by the flying scotsman
Replied by the flying scotsman on topic Tires and Cold Weather
I dont drive my 928s in the winter which in this part of the world is a longtime but thats my decision.

I do drive my 4x4 truck in the winter and have spare wheels with winter tyres fitted for ice and snow grip. Up here all seasons dont cut it below 7C and we regularly have months where we dont get above zero.
In some Canadian cities full winter rubber is mandatory regardless of the vehicle driven.

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26 Nov 2012 19:53 #12668 by mm928
Replied by mm928 on topic Tires and Cold Weather
Great minds think alike, well yours does anyway :) I just came in from the garage checking all 3 of my cars. The 928 was about 4-5 lbs low in each tire...

You are right on as usual

1983 928S - 16v 4.7L L-Jetronic
Dark Grey w/ Blue Leather
85/86 exhaust manifolds
Y-Pipe
SS Hi-perf Cat
S4 springs
Bilstein shocks
Air pump delete
VIN: WP0JB0926DS861180
- - Isn't Life great? - -

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28 Nov 2012 13:42 #12701 by Mike Frye
Replied by Mike Frye on topic Tires and Cold Weather
+928!
We had a DE about a month ago and the temps were significantly lower than what most were used to in the am. I think there were 6 or 7 wrecks where guys just started pushing their tires before they (and the track) were fully warm. Lots can happen with low/cold tires on cooler roads.

Also, your engine is going to LOVE the cooler air so it's going to respond differently to the throttle as well.

More go+less grip=interesting situations...

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28 Nov 2012 23:04 #12705 by 928mac
Replied by 928mac on topic Tires and Cold Weather
-21 deg C today or -6 F

I just mark where people freeze to death with head stones and ILL bury them come spring thaw

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26 Dec 2012 14:51 #13016 by hinchcliffe
Replied by hinchcliffe on topic Tires and Cold Weather
Yeah, but think about how much more sideways driving and drifting you can practice....

I have a '97 BMW 528 that is RWD, throw on the snow tires and turn off the stability control and learn to feel the stick and move. I have so much fun driving in this weather. And you can learn a lot about handling that would be useful when you guys start coming to my DE's........

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27 Dec 2012 07:41 #13020 by emmanuelli
Replied by emmanuelli on topic Tires and Cold Weather
guess i need to check mine!

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02 Jan 2013 06:21 #13050 by linderpat
Replied by linderpat on topic Tires and Cold Weather
and for those of us who put them away, be sure to overfill your tires by a few psi, unless you lift the car for the winter.

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02 Jan 2013 16:41 #13053 by pcar928fan
Replied by pcar928fan on topic Tires and Cold Weather
I usually overfill by quite a lot if a car is going to sit. On the early cars that run 36 I usually go 45-50 and on the rear S4 tires that normally run at 44 I'd overfill to 55. On the GTS's (36 f/r) I'd go 45-50... That is just me, but if the car is only going to sit a couple of months you probably don't need to go as high as I tend to run the pressures.

James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black

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11 Jan 2013 09:13 #13142 by emmanuelli
Replied by emmanuelli on topic Tires and Cold Weather

I usually overfill by quite a lot if a car is going to sit. On the early cars that run 36 I usually go 45-50 and on the rear S4 tires that normally run at 44 I'd overfill to 55. On the GTS's (36 f/r) I'd go 45-50... That is just me, but if the car is only going to sit a couple of months you probably don't need to go as high as I tend to run the pressures.


Pardon my ignorance, why do you OVERFILL the tires if the car is going to sit for an extended period?

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11 Jan 2013 11:53 #13146 by martinss
Replied by martinss on topic Tires and Cold Weather

Pardon my ignorance, why do you OVERFILL the tires if the car is going to sit for an extended period?


See cars.lovetoknow.com/Car_Winter_Storage

"Add Air to the Tires
If you won't be driving your car for several months, it's important to make sure storage will not harm your tires. During storage, your vehicle's weight will be directly pressing on the tires. Additional tire pressure will help distribute the burden more effectively.You can find the maximum tire pressure on the sidewalls of your tires or on any documentation you might have received when you bought them. Avoid overfilling the tires, as this too can cause damage."

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11 Jan 2013 14:24 #13147 by emmanuelli
Replied by emmanuelli on topic Tires and Cold Weather
cool, i have just not had a car that i have needed to store, its always been daily drivers. but its definitely good to know. thanks martin!

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11 Jan 2013 17:58 #13150 by pcar928fan
Replied by pcar928fan on topic Tires and Cold Weather
The original tires on BLU82 are not even CLOSE to round anymore, but still hold air quite well and look brand new (at about 2' or more anyway)... They have flat spotted very badly, which is probably a good thing, because if they were actually round you might be tempted to drive the car on them and then they would come apart from age/dry rot! That could be FAR WORSE than driving very slowly on square tires!

James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black

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11 Jan 2013 20:07 #13156 by mm928
Replied by mm928 on topic Tires and Cold Weather
To Martin's point, if you have cash,,,,HA you can buy rounded tire cups that keep your tires from flat spotting, especially if you have cold weather.

1983 928S - 16v 4.7L L-Jetronic
Dark Grey w/ Blue Leather
85/86 exhaust manifolds
Y-Pipe
SS Hi-perf Cat
S4 springs
Bilstein shocks
Air pump delete
VIN: WP0JB0926DS861180
- - Isn't Life great? - -

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19 Feb 2013 18:36 #13600 by Normy1
Replied by Normy1 on topic Tires and Cold Weather
-Another thing to add to Wally's post:

1. Start your car once per week in the winter. Let it idle for 5 minutes.

2. ALWAYS run your air conditioner! In Florida, I generally don't use the AC, I just roll down the windows. But I ALWAYS run the compressor for 5 minutes the first time I start the car that day. Why? Because the seal at the point where the shaft goes into the compressor needs lubrication. If you don't keep this seal lubricated, then the compressor will fail YEARS before it should!! The most common failure mode of an air conditioning compressor is this seal, and believe it or not, an AC compressor in Florida will last TWICE as long in general as one on a Michigan registered car. Reason? The Michigan car for 7 months per year doesn't have its AC compressor running, so the seal looses all its lube. On startup, for a few seconds there is metal to metal contact, and eventually this seal wears and leaks out all the freon. In Florida this doesn't happen, so despite the vastly larger number of hours on the unit, they last longer down here.

N

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  • wallyp
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20 Feb 2013 13:58 #13613 by wallyp
Replied by wallyp on topic Tires and Cold Weather
There are quite a few folks who disagree with short-time running an engine during hibernation.

Lots of water/acid going into the oil and the exhaust system...

Wally Plumley
928 Specialists
www.928gt.com

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  • the flying scotsman
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20 Feb 2013 15:18 #13615 by the flying scotsman
Replied by the flying scotsman on topic Tires and Cold Weather
My cars are parked Nov - March minimum and are not started......they are challenged once spring arrives though :)

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