Tyre tread depth

[Sootchucker]

Can anyone with a new Golf fitted with 18" Bridgestone Potenza S001 tyres let me know how much tread there is in a new tyre please ?

Call me sad, but I've been monitoring the wear over the last 8000 miles or so, but forget to check the tread depth when new to see how much (as a % of the whole) the tyres have worn.

Many thanks.

[matchboy]

I think its 6mm - I've just had a service (12K miles) and my front tyres are at 4mm, one at the back is 5mm, the other at 6mm.  I could be completely wrong however!

I was actually a little disappointed as the front two on my GTI were bald at 18k miiles - clearly not driving hard enough 

[mcmaddy]

Should be 7-8mm on a brand new tyre.

[Sootchucker]

Thanks guys. 8mm is about what I thought.

Currently have a minimum of 4mm (outside of Nearside front) with an average depth of around 4.5mm all round after 16,500 miles. I just wondering how far I will get before than get down to about 2.5mm (which is when I will change them). 20k maybe ?

[matchboy]

Should be 7-8mm on a brand new tyre.

That makes sense, as no way I'd have not lost any tread in 12k miles - sorry to the OP 

[itavaltalainen]

Simple maths should give you the answer.... 16k5 miles / 3.5mm = 4k7 miles/mm.... 2mm left (left till 2.5mm remain) x 4k7 = 9k4 miles left.

[monkeyhanger]

Simple maths should give you the answer.... 16k5 miles / 3.5mm = 4k7 miles/mm.... 2mm left (left till 2.5mm remain) x 4k7 = 9k4 miles left.

Not quite that simple, as the tyres wear down, the rolling radius and circumference come down slightly. Based on 18" wheels and a 90mm sidewall (225/40), and adding either 2.5mm tread or 8mm tread gives you a 65.32cm or 64.22cm diameter, and a 1.6% difference in rolling circumference between 8mm and 2.5mm tread depth. Your wheels will be spinning a little faster to maintain the same speed and therefore wearing a little quicker. But 1.6%....who cares? 

[Sootchucker]

Knew we could rely on you MH for the technical answer 

[caprigreen]

Simple maths should give you the answer.... 16k5 miles / 3.5mm = 4k7 miles/mm.... 2mm left (left till 2.5mm remain) x 4k7 = 9k4 miles left.

Not quite that simple, as the tyres wear down, the rolling radius and circumference come down slightly. Based on 18" wheels and a 90mm sidewall (225/40), and adding either 2.5mm tread or 8mm tread gives you a 65.32cm or 64.22cm diameter, and a 1.6% difference in rolling circumference between 8mm and 2.5mm tread depth. Your wheels will be spinning a little faster to maintain the same speed and therefore wearing a little quicker. But 1.6%....who cares? 

Great stuff but you do need to get out more Sherlock 

[caprigreen]

I remember seeing an 11 month old GTI at the dealers , it had covered 8k miles and the tyres were just legal. I test drove it and ragged it , looks like everyone else did the same  The way I drive could be looking at 20k