FAO - Baz Hartech......
Discussion
Baz
Quick bit of advice, if I may be so bold.....
I just had to buy a new rear tyre due to a craft knife puncture which couldn't be repaired.
The other rear is about 1/3rd worn.
Obviously the rolling circumference of the slightly worn tyre is slightly smaller than the new one (by a factor of 2 x pi x Radiusdifference.) This will be a very small difference, but does this have any potential for causing problems with drivetrain/diff etc.. or am I paranoid....?
i.e do I need (if I am being ultra careful) to buy another rear tyre for the other side......
Thanks.
Edited by Vesuvius 996 on Wednesday 24th January 09:59
Vesuvius 996 said:
Baz
Quick bit of advice, if I may be so bold.....
I just had to buy a new rear tyre due to a craft knife puncture which couldn't be repaired.
The other rear is about 1/3rd worn.
Obviously the rolling circumference of the slightly worn tyre is slightly smaller than the new one (by a factor of 2 x pi x Radiusdifference.) This will be a very small difference, but does this have any potential for causing problems with drivetrain/diff etc.. or am I paranoid....?
i.e do I need (if I am being ultra careful) to buy another rear tyre for the other side......
Thanks.
Edited by Vesuvius 996 on Wednesday 24th January 09:59
Totally completely and utterly paranoid Soovie.
Nowt to worry about whatsoever. No new tyre required. Have a
instead Edited by slippydiff on Wednesday 24th January 11:08
Not a scientific answer to the question but I would say it was a question of degree. For example if your tyres last, say 10,000 miles and the 'worn' one had done 5K+ I would have thought it sensible if you were going to be pushing on in the near future. If we are only talking about, say 2k difference then I wouldn't bother. Had a similar thing when an Ex took a knife to one of my tyres a number of years ago. As both tyres would have been due to be replaced in a couple of months I had them both done. Yet when i burst a side wall on a broken kerb stone in a car park that I hadn't seen I only replaced the damaged tyre as the other side was only a few K miles old. At the time I was doing a lot of very enthusiastic driving and didn't notice any difference once I’d done the usual 'gentle' 200miles or so to bed in the new tyre.
rude-boy said:
Not a scientific answer to the question but I would say it was a question of degree. For example if your tyres last, say 10,000 miles and the 'worn' one had done 5K+ I would have thought it sensible if you were going to be pushing on in the near future. If we are only talking about, say 2k difference then I wouldn't bother. Had a similar thing when an Ex took a knife to one of my tyres a number of years ago. As both tyres would have been due to be replaced in a couple of months I had them both done. Yet when i burst a side wall on a broken kerb stone in a car park that I hadn't seen I only replaced the damaged tyre as the other side was only a few K miles old. At the time I was doing a lot of very enthusiastic driving and didn't notice any difference once I’d done the usual 'gentle' 200miles or so to bed in the new tyre.
Thanks. I was more concerned about whether the drivetrain might be in some way "out of balance" with one tyre marginally larger than the other....
If your car is 2WD and an open diff, i.e. not slippy diff, then there is no stress on the drivetrain, its just like going around a long corner and the ABS should not be affected. You might find some small rear steer effect.
If the car has an LSD, then in a straight line you will be in effect going around a corner and making the diff tighten up more so under power causing a small amount of wear in the diff.
If the car is 4WD, then you will have altered the average speed of the rear wheels and putting a new tyre on the rear will reduce the % torque applied to the front. Now problem for the drivetrain and ABS and TC should not be affectde
Whether you can tell any difference, don't know never done it
If the car has an LSD, then in a straight line you will be in effect going around a corner and making the diff tighten up more so under power causing a small amount of wear in the diff.
If the car is 4WD, then you will have altered the average speed of the rear wheels and putting a new tyre on the rear will reduce the % torque applied to the front. Now problem for the drivetrain and ABS and TC should not be affectde
Whether you can tell any difference, don't know never done it
Vesuvius 996 said:
I was more concerned about whether the drivetrain might be in some way "out of balance" with one tyre marginally larger than the other....
The differential will compensate for this in exactly the same way it does when the car corners and the outside wheel travels further than the inside wheel.
utsonhisbetterbesafesmart*ssface:i had a blow out in my '3 and at the time could only get 1 tyre, stuck as i was in the shit hole of the universe.
my tyres had about 1500 miles on them when it blew.
it definitley had a marked effect on the handling of the car and it felt decidedly nervy under acceleration after that, and never evened out in the 1500 miles i tried to stick it for.
sorry soov, if it were me id replace em both. not worth risking your neck over 150 sheets.
my tyres had about 1500 miles on them when it blew.
it definitley had a marked effect on the handling of the car and it felt decidedly nervy under acceleration after that, and never evened out in the 1500 miles i tried to stick it for.
sorry soov, if it were me id replace em both. not worth risking your neck over 150 sheets.
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