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 New tyre to the front or to the rear.., Your choice....

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6UE5T
post Mar 30 2013, 06:36 PM

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I put new tires to which ever axle will wear it out faster. The reason is to try even out the wear. Having said that I always rotate every 10k km in order to try even out wear if all new tires, so when comes time to change it will be for all 4 tires at once. Note that this is assuming front & rear are the same size (not staggered). For my current ride, I cannot do that anymore since it's staggered sizes, so can only rotate left/right.
6UE5T
post Mar 30 2013, 11:35 PM

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QUOTE(kadajawi @ Mar 30 2013, 07:46 PM)
How to rotate left right? And why?

I just replace them all at once...
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Just take out your left and put it on right and vice versa, but can do only for non directional tires. If directional then have to take out the tires from the rims, put it back with opposite direction, then switch left-right. It's just to try even out the wear as much as possible so that later can replace together, like you said. smile.gif

This post has been edited by 6UE5T: Mar 30 2013, 11:36 PM
6UE5T
post Mar 31 2013, 01:04 AM

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QUOTE(kadajawi @ Mar 31 2013, 12:42 AM)
Normally inside and outside is defined on the tyres... Also there shouldn't really be different wear... unless you have too much chamber or something is wrong with the car... or you are a NASCAR driver.

Some people say not to swap left right, and turning them around sounds like a bad idea. It costs money, I didn't ever notice a difference in wear from one side to another, and it may have handling disadvantages. So... not really worth it IMHO.
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That's if you're using asymmetric tires, then you cannot switch the tire/rims orientation but you can rotate left/right immediately. If directional symmetric tires, then there's no inside/outside so you can switch the sides, but for directional you need to change the tire/rim orientation to switch left/right.
As for the camber, cars which are running around 1-1.5 degrees will usually wear out the inner side just a bit more, will be a bit noticeable after around 10-20k km usage.
It's true that it might not be much difference between left/right and should not be if normal, but it's actually recommended to still rotate left-right if possible to really even out the wear. There won't be handling disadvantages. As for the cost, well when using non-directional tires I used to rotate myself for all 4 corners, so zero cost, just a little sweat which I take as extra work out! biggrin.gif. If directional, then of course have to bring to tire shop, but then don't need to do it so often la. If want to save, can just do it every 15/20K km. The only other additional cost is a wheel realignment might be necessary but usually not.
6UE5T
post Apr 1 2013, 06:23 PM

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QUOTE(sunnyckh @ Apr 1 2013, 02:51 PM)
I encountered understeer once when raining, forgot new tire on which side, i found out the more i press brake pedal, the car face more understeer, then i release the brake and correct using my steering.
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That's because the tires were already sliding/loosing grip, so the the more braking force you apply would actually makes it worse as they will slide even more and would not make the tires regain grip. By letting off the brake pressure, you'll let the tires roll a bit more and hance can regain grip so then you can turn. If you watch racing, you can see that everytime the cars start to lock/slide underbraking, the driver will release the brake to regain the grip allowing him to steer back into the corner. This is actually what ABS is also doing for normal cars.
This can also happen in the dry, just at much higher speeds when entering a corner.
6UE5T
post Apr 1 2013, 07:30 PM

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QUOTE(BuFung @ Apr 1 2013, 12:46 PM)
another debate I would like to discuss is...  is shorter car like those B-segment really require VSC/ESP....   since a shorter car, chances of loosing the rear is lower...
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Any car can still spin or flip so VSC/ESP should be able to benefit all, small or big cars. But I've driven cars with those features to the limit yet so I don't know how it actually feels/behaves with those features turned on.

This post has been edited by 6UE5T: Apr 1 2013, 07:31 PM
6UE5T
post Apr 1 2013, 09:39 PM

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QUOTE(kadajawi @ Apr 1 2013, 04:43 PM)
Even if that is true, longer wheel base cars tend to have wider, grippier tyres.

Anyway, that means the car won't break loose as easily in a straight line, but if you are driving in a corner it is more likely to oversteer? That sounds more reasonable. But does it happen often?

The only way I got to oversteer was by using the handbrake. Understeer yes. Oversteer no, unless I really force it. But then again I rarely drive cars with a long wheelbase (i.e. D segment and above).

Yes, I can agree with your latest post.
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If your car is FWD, it's natural tendency is to understeer since it's more front heavy and the front wheels have to multitask (putting power to the road and steering), so more difficult to oversteer unless you do trail braking while entering corner too fast, or pull the handbrake like you mentioned.
If RWD, then can be easier to oversteer cause you can break loose the rear traction by applying more throttle to overpower the rear grip, hence the term power sliding which what drifters do. The weight distribution is also more even compared to FWD cars (some even able to reach 50/50, such as BMW).

 

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