Am I killing my transmission

[Slo TSI]

Ok I purchased new tires all around about 9 months ago and about a week ago one of my tires fell victom to a nyc pot hole. I took it to a local tire shop to put on a emergency used tire. My question is because my car is awd and you need to have even tire thread all around cause you could kill your tranny does that mean I have to buy a new set of tires or just get another one that matches the tread depth of the other 3 tires?

 

[gurmanator]

you can buy just one tire but it has to be the same circumference as the other three tires.example=if you 245's on the car now you need to buy a 245 not a 205.get the same size as the other three.its like wearing a boot on one foot and a tennis shoe on the other foot.hope this helps.

 

[Slo TSI]

I understand that part about it having to be the same size. Sorry I didn't explain that but will the little tire wear that the other 3 tires have be enough to destroy my trans if I were to buy the same brand and size tire as the rest?

 

[gurmanator]

if you only had the tires for 9 months then you will be fine unless you put 20,000 miles on them already.that little bit of wear wont hurt it.just get a new tire and you will be good to go.

 

[Slo TSI]

Thanx for the fast info. btw I put like 9k on them

 

[gurmanator]

you will be fine.

 

[dherron]

The bit about if you have 245's get 245's is not necessarily correct. But ya keep the same size tires. 245 and a 205 could be the same height tire as long as the aspect ratio's allow them to be. Aspect ratio is the second number on a tire. 205/"55"/VR16 It tells you how tall the side walls of the tires is by taking 55% of 205 millimeters in this case. The wall would be around 111 millimeters. And a 245/45/VR16 would have a sidewall of 110.6 millimeters. So basically a 205/55 would be the same height tire as a 245/45. Thus making the theory of a 245 and a 205 not havin the same circumfrence incorrect. Both tires could run on a AWD at the same time and not hurt a thing.

 

[Slo TSI]

The bit about if you have 245's get 245's is not necessarily correct. But ya keep the same size tires. 245 and a 205 could be the same height tire as long as the aspect ratio's allow them to be. Aspect ratio is the second number on a tire. 205/"55"/VR16 It tells you how tall the side walls of the tires is by taking 55% of 205 millimeters in this case. The wall would be around 111 millimeters. And a 245/45/VR16 would have a sidewall of 110.6 millimeters. So basically a 205/55 would be the same height tire as a 245/45. Thus making the theory of a 245 and a 205 not havin the same circumfrence incorrect. Both tires could run on a AWD at the same time and not hurt a thing.

So basicaly your saying .4 millimeters difference in one tire is nothing to worry about and wont affect your trans?

 

[dherron]

Yes that is what I am saying. There would be more of a difference in the circumfrence of the tire if there was a difference of 1 to 2 psi in the tire.

 

[dherron]

Believe me, I have taken 2 years of education in Automotive Technology. And my first year all my studys dealt with anything I wanted. So I did alot of research on all wheel drive systems. And with the viscous couplers in these transmissions you can have as much as a 7 degree turn difference (between front and rear) before anything will start to destruct. But I would not recommend it in any way shape or form. Haha

 

[Slo TSI]

thanx for all the help guys