Toymods Car Club Inc: General Car Talk => why do worn tyres have no grip and slicks have lots?

Toymods Car Club
www.toymods.org.au

F.A.Q.

Home

Members

Toymods » General Car Talk » why do worn tyres have no grip and slicks have lots? Show: Today's Posts :: Show Polls Email to friend

Author

Topic

lang
Forums Junkie

Location:
Adelaide
Registered:
June 2003

Re: why do worn tyres have no grip and slicks have lots?

Thu, 25 March 2004 23:10

chrisss wrote on Fri, 26 March 2004 01:04

torque - learn this equation p = l/a
where p = pressure, l = load, a = area.
if the pressure is the same (eg 30psi), the load the same (eg 1000kg car) the area must be the same.

the original question is bad - why do worn tyres have no grip and slicks have lots?
this is a pointless question, its like comparing apples to oranges. its stupid to compare a worn out street tyre with a racing slick!!

the question should be :
seeing as racing tyres have no grooves why dont my worn tyres grip as good as when they have lots of tread? - now we can make a decent comparison.

but heres another question basically asking the same thing :
- would a slick that has been grooved have the same,less or more grip than an ungrooved slick? why?

and by grip im not talking about racing conditions,im imagining for example the start line take off where the tyres are at low temps and have not had time to heat up.

if you actually read the first post in this topic youd see that the title was an attempt at a vague description of what the topic contanined rather than all the bullshit ones that say "click here please reply" at least you had some idea what you were going to be looking at when you entered the thread.

if you DID actually read the first post properly, i was comparing 2 normal street tyres, one with the grooves worn off, one with a good amount of tread left. a slick was merley mentioned to help describe what the tyre was LIKE with the grooves worn off. it was never actually a discussion about the compound used. it is blantantly obvious to everyone that slicks have more grip than a street tyre. it was a reverence to the fact that no grooves are used.

Quote:

a worn tyre has more rubber in contact with the roads surface, so wouldnt you expect it to have more grip, because that is the concept behind a slick tyre. more rubber in contact with the road means more grip, but with my tyres, 2 are pretty worn down, and 2 are still good, and the end with the worn ones has less grip and i rotated them and the same thing apply, the end with the worn ones has less grip

now that youve read that properly, you will see im comparing 4 of the same kind of tyre, 2 worn and 2 not worn. i was never comparing a worn street tyre with a slick tyre.

the question wasnt bad it was the exact same question that you have so brilliantly rephrased in your post, the title of the topic was a guide to what was in the thread not the actual question.... as you would have known if you bothered to read it!

[Report message to a moderator]

[Message index]

-=] Back to Top [=-

Current Time: Thu Jul 31 06:02:06 UTC 2025

Total time taken to generate the page: 0.0052599906921387 seconds

.:: Contact :: Home ::.