I am trying to guage when I should change my summers to winters. Someone told me I should change them when the temperature is below 10C since there is no traction on summer tires at that temp. Is that outside air temperature or ground temperature? Or should I wait until first snow fall and then change them?

Eeyore

 

You probably would better to do it now Karim since you are running summer tires.
Wayne

 

Thanks Wayne.... I was looking for a consensus to some intuition I had. So I am bringing out my cordless 3KO drill, the jack and blocks and doing on the drive way. Oh by the way any idea on proper placement of the jack to lift the car. The manual shows the spot, but when I look at it from the last time I changed the tires, they were pushed in from the weight of the car. So I am wondering where is a good place?

Kariim.

P.S. tire pressure for winter tires should be the same pressure as stated on the door right?

 

Just put mine on..

 

Mine went on Thursday night. Snowed Friday morning. Ice, slippery conditions and AH's everywhere.

 

You should be using an adapter or flat, grooved rubber saddle for your floor jack if you are using one to lift from the sides of the car to avoid crushing the rails.

Winter tire pressure should be about the same as your summer pressure. A bit of tweaking of air-pressure, summer or winter, can be done depending on your preference and wear patterns on the tread.

 

Right now, bro, is the time......You've got summers on that don't have much traction below 10 degrees C.

Don't wait any more. You need them on b4 we get much snow or cold.

C.

 

Crap! Had I have known that I would have done something about it. Can I purchase one of these adapters or do I need to manufacture one. I have a 1/2 jack that has a grooved crown, and I think that should be okay.

Karim.

 

Mine are going on tomorrow morning 9am

 

Ran into a snag. I can't seem to find the bolt size for the bolts on the car. Does anyone know what the correct size is? I am wondering if it is 22mm?

Thanks

E.

 

Karim, If you are talking about the socket size to remove the lug nuts, you need a 21mm socket. The torque for your lug nuts when you re-install should be 80 ft-lbs.
Wayne

 

Thanks Wayne, you are a life saver!! 80 ft-lbs!! DAM!! I can bearly make 10 with my weakling arms!!

Karim

 

No problem Karim. You won't have any problem tightening them up to spec. Actually a lot of guys overtighten them, thats why its a good idea to invest in a 1/2" drive torque wrench.

 

I torque to 85.

 

Me too. specs are 72- 87 foot pounds.