Rear tyres wear quicker than fronts?

Aebous said:
Ok, if you think DTC is off when no lights are on, then try to spin the rear tires. The car won't allow it, thus DTC is on.
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When no lights are on you still have traction control (one of the main functions of DSC), just not Dynamic Traction Control.
So far, I've only turned DTC on (had the DTC light on) in the snow, and found it aided traction.

edit:
Do you think that with the DTC light on you have stability control but no traction control?
 
Well I can only go by my experience in my car.
My car appears to work the way the manual says it should.

I doubt I would have got off my drive in the snow if DTC light on meant no traction control.

I've just been out to the shops and on the way back had a little play up a quiet road.
Uphill straight ahead, standing starts on dry tarmac

DSC on - DTC light off - no wheelspin
DSC on - DTC light on - no wheelspin
DSC off - DTC light off - wheelspin

If it's different for you, then, well, the cars are behaving differently... :?

edit:
I'll try to remember to have another go when it rains
 
Aebous said:
Close, with no lights illuminated that means both DTC & DSC are both fully activated. When you press the button once it disables DTC but leaves DSC on, allowing you to spin the rear tires, but if your back end starts slipping too far out compared to the front wheel angle the DSC will cut power to the rear wheels. As you said at the end, if you hold down the button you get the pretty yellow light showing a triangle with an arrow going around it to let you know, hey your on your own and the car can and will spin all the way around in a circle if you allow it too.
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What he said, you dont turn DTC/DSC on (unless already off) you only turn them off. By default everything is on with no lights on the dash.

In the snow your meant to press the button once and turn DTC off as the car is useless otherwise and will keep just cutting power to the wheels and you wont get anywhere.
 
attachment.jpg
from http://www.e90post.com/forums/showpost.php?s=f7419189bf5911116dd84381b8fa3ac5&p=6460078&postcount=15

with DTC on, DSC has changed thresholds to allow you some wheelspin and less stability before it "saves" you
 
TO//M said:
If you have 4mm tread depth in the middle of the tire I'll bet you don't have anything near that on the inside edge. The negative camber of the rear suspension wears the tires at a very uneven rate.
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Agree - wear characteristics are different front to rear an would certainly advise against changing them round. Might seem like a cost effective option BUT the only contact you car has with the road is through the footprint of each tyre which if maintained at the correct presures will give the maximum possible tread footprint for each corner and wear the tyre accordingly.
 
nicko said:
from http://www.e90post.com/forums/showpost.php?s=f7419189bf5911116dd84381b8fa3ac5&p=6460078&postcount=15

with DTC on, DSC has changed thresholds to allow you some wheelspin and less stability before it "saves" you
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Yeah looking through that thread and seeing some good explanations above the picture it seems we were partially misunderstanding what DTC being illuminated meant. At any rate, keep in mind yellow lights on = wheels can spin.
 
AlanJ said:
TO//M said:
If you have 4mm tread depth in the middle of the tire I'll bet you don't have anything near that on the inside edge. The negative camber of the rear suspension wears the tires at a very uneven rate.
Click to expand...

Agree - wear characteristics are different front to rear an would certainly advise against changing them round. Might seem like a cost effective option BUT the only contact you car has with the road is through the footprint of each tyre which if maintained at the correct presures will give the maximum possible tread footprint for each corner and wear the tyre accordingly.
Click to expand...

I had been keeping an eye on my rear tyres down to around 4mm ( so I thought ) Today I removed the wheel to give them and the arches a good clean. I was horrified to see the inside of the rear tyres were , basically bald, Im putting it down to negative camber , however I will get it checked when the new tyres are fitted .
 
Yup, I always have to remind myself not just to check the tread depth gauge built into the tyre on the outside, but reach all the way over the top to feel the other side. Often results in two sets of horrified feelings - first when you realise how loosely you've been attached to the road, and then secondly when you go online to buy a new set and see the price... Cheaper than a new car though :wink:
 
The only place I ever check is the inside of the tyres as I know that's the quickest place to wear :P
 
My new rears coming tomorrow as at the MOT they stated they were bold where mmm-five just mentioned :)

From the remainder, they look great - just the last couple of CM of the inner tyre is shot.
 
mmm-five said:
The only place I ever check is the inside of the tyres as I know that's the quickest place to wear :P
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Depends how/what you're driving :wink:

I was told I had some "interesting" wear patterns on the outside shoulders of the fronts on the Civic Type R I previously owned...
 
a11y said:
Depends how/what you're driving :wink:
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Of course.

My M5s didn't have the same wear pattern as the Z4, but that had almost no negative camber on the rear and was much more softly sprung to keep the tyres in contact with the road as much as possible.

In normal driving the M5 had an even wear pattern, but on the track it would wear the outside of the LHS tyres to bald in about half a day, and I'd swap them left to right for the 2nd half of the day, then switch back to my road wheels for the trip home.
 
Apparently I "must've been driving like a hooligan" to get the wear pattern on the outer shoulders like I did. Think when I was younger I took that as a complement :)

I'm plesantly surprised that despite running -2.5 deg on the rear of my Z4 I'm getting fairly even tyre wear. They're coming up to 12k miles and due for replacement soon, but the wear on the rears is quite uniform. Perhaps it's just the characteristics of the suspension movement, etc on the Z4 as I expected inner edge wear a lot higher than it has.
 
pvr said:
Hooligan :)

I got 21k on my M rears :D
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I managed around the same on my 3.0si Coupe rears. I'm not one to drive particularly fast though, to be honest.
 
I have my moments, but they seem to be holding out very well. I just ordered two more of the same so I can wear front / rear completely this time.

However - it took me 4 years to get 20k on the car so they might see me out :)
 
I got 100 miles on two R888s once. I'd have gotten more but air kept escaping from the metal cords showing through the tread pattern :oops:

Baldy_R888.jpg


I'm not as aggressive anymore though, and don't tend to do the 'cheap' airfield days either. I was (at one point) spending more per month on tyres & brakes than I was on track days & fuel - and each even was costing me about £1000 in the M5.

Probably doing this all day obviously didn't help.
[youtube]6lvnO1tKLjY[/youtube]
 
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