Dan W

I have a question about tyre wear.
Imagine you have two identical cars with a set of identical new tyres fitted. For arguments sake the tread depth is 9mm. Both cars are going to set off down two identical roads at identical speeds. Both cars have an unlimited supply of fuel so do not need to stop once they have set off, nor will their engines or other components require servicing. The camber, castor etc of the wheels on both cars is also identical.

The only difference between the two situations is that in one situation the weather is fine and the road is perfectly dry while in the other situation it is raining and the road is wet. Not damp, but wet, just like it would be if experiencing a typical rainfall.
Both cars set off and will only stop when their tyres have worn down to such an extent that they reach the legal limit of tread depth of 1.6mm.

The question I have is which set of tyres will need changing first? The wet ones or the dry ones, or will they wear out at exactly the same time?

tubbytommy

iTrader: (20)

id say the wet ones wear first, more chance of wheelspin in the wet

bonesetter

iTrader: (9)

Wet = lubrication = less friction

Dan W

That's what I was thinking but does the water have some other sort of corrisive effect, like it does when running over stones in a stream that gradually become smooth.

I honestly dont know.

Dan W

No wheels will wheelspin in either situation. Just turn as if driven normally.

Dan W

Tubby Tommy - I like your mission statement about Making Scoobynet a place where people can ask questions without being made to look silly.

I salute your cause.

Gear Head

iTrader: (2)

6VOLT

iTrader: (1)

I cant believe that some people get shot down for asking genuine subaru related questions yet this nonsense question (no offence op) has recieved a genuine response from tubs....wtf lol

f1_fan

iTrader: (9)

In my opinion the tyres will last longer on the car driven on the wet roads as long as no major slippage occurs

1) they will be cooler.... the hotter the tyre the greater the wear

2) the rolling resistance between the tyre and the road surface is less in the wet

Dan W

Its difficult not to take offence when you call what I feel is a perfectly reasonable question 'Nonsense'.

This question is something I genuinely would like to know the answer to so where else am I supposed to ask it?

Dan W

That's a reasonable answer. The conundrum I had is that on the one hand the water -as previously noted- provides- lubrication, hence less friction and less wear. But on the other hand does the water in some way creat its own wear by contacting with the tyre?

It seems intuitive that they will last longer in the wet however.

Fonzey

iTrader: (5)

I guess the road in question is the runway from the fast and the furious?

Maz

iTrader: (34)

I can't help agreeing with you. It seems a strange way of asking if tyre wear is influenced by dry or wet conditions.

tubbytommy

iTrader: (20)

its not my mission statement, it was something written by a self righteous bellend thats been here five minutes, it had me in stitches so much i had to borrow it for my signature

Dan W

that is fair enough Einstein. The scientist in me tends to over think things. You are not the first to point out a simple way of saying something I have the potential to make a meal of.

BUT - we are all human.

Dan W

I think the question I posed at the start of this thread is perfectly reasonable.
So what, it isnt worded in a way that some people find appealing.

If any of you have a problem with it just find another thread to follow.

If nobody adds any posts to the thread, it will drop of the end of the page and I quietly get the message.

Dan W

I wasn't thinking of that when I wrote the post.

I saw the film years ago so cant remember what runway you are referring to.

f1_fan

iTrader: (9)

I don't think so or at least if it does it is less than being in contact with dry tarmac or concrete and all the chemicals they contain.

My answer is based on what I read last year when researching winter tyres.

Maz

iTrader: (34)

Point taken. A comparative analysis is only of value if all the variables are consistent for the test subjects.

Dan W

I agree but you also need to ensure the test variable is fully under your control and not confounded by any unknown extraneous variables

GeeDee

iTrader: (2)

I would put money on the answer to your question being the dry weather tyres needing to be replaced first principally due to friction between the dry road and the tyre.

Secondly, it would seem logical that dry weather would be warmer than wet weather and so rubber would be softer. Certainly, the wet would have a cooling effect on the rubber.

Maz

iTrader: (34)

In the case of tyre wear on public roads it's going to be mightily difficult to maintain variables.
My own tests conclude my right foot and cornering speed to be the main variables in affecting tyre wear.

Gear Head

iTrader: (2)

Why do you need/want to know? Is it for a project or something?

Worrying thing is though.....you asked a bunch of plebs on a pokey car forum!

Fudgey

iTrader: (1)

you can test this theory yourself.

get your missus to bend over and sling it up her ***, go in dry at first and see how you get on.

if you manage to stay on, spit on your dick and see if she prefers it that way.

i thank you...

Maz

iTrader: (34)

Speak for yourself!😄

Maz

iTrader: (34)

On second thoughts........

Maz

iTrader: (34)

You sound like a seasoned traveller of the Hershey Highway!

Fudgey

iTrader: (1)

not at all mate, i must admit that i am not speaking from experience lol!

Dan W

I was also thinking that the driver's confidence might also be an extraneous variable.

Dan W

I was purely curious really mate. I just changed my tyres and this thought cropped up again.

Before I changed tyres I was running Yokohama Parada Spec 2s which I found good in the dry but not as good as i expected in the wet.

I now have Toyo T1 Sport which I havent had long enough to rate yet.

But while I was considering what to get I was wondering in which condition does a tyre wear down quicker - wet or dry. Purely because i was thinking about things from a performance point of view.