Mazda Rotary Club

General => General Technical => Topic started by: Clarky on March 05, 2009, 11:56:54 AM

Title: How long to scrub in new tryes
Post by: Clarky on March 05, 2009, 11:56:54 AM
Just wondered how long on average it takes to scrub in new tyres, as my Goodyears seem a bit skittish  after 200 miles.
Title: How long to scrub in new tryes
Post by: Brett on March 05, 2009, 12:08:50 PM
Have you checked the pressures?
Title: How long to scrub in new tryes
Post by: SiH on March 05, 2009, 12:12:05 PM
Should be fine by now - as above, check pressure. Alignment also needs to be considered if you\'ve never had that changed.
Title: How long to scrub in new tryes
Post by: Clarky on March 05, 2009, 12:21:48 PM
No have not rechecked pressure yet, had 28 all round, thinking of dropping the rear to 26 or 24, no alignment check yet, but has always seemed ok.
When i planted the pedal rear just fishtailed dry road, which it did not when i had goodyears before on 17" wheels,, but i now have 18" wheels.
Title: How long to scrub in new tryes
Post by: Jono FD3 on March 05, 2009, 02:04:26 PM
Lift the pressure a little If I was you.... I\'m running 32 rear & 30 front & don\'t seem to have any issues........ although I haven\'t got the same tyres as you so this would make a diff!! But after 100 miles they should be scrubbed in!

Jono
Title: How long to scrub in new tryes
Post by: yehreally on March 05, 2009, 07:38:01 PM
yep 100 miles as a guideline  and 32 rear 30 front :cheers
Title: How long to scrub in new tryes
Post by: Ricco_04 on March 06, 2009, 07:16:23 PM
Why do people stagger the pressures?  They should be equel as its a 50/50 weight distributed car (well as standard they are! :driving)
Title: How long to scrub in new tryes
Post by: karl_tate on March 06, 2009, 07:21:39 PM
i dont think tyre pressures are related to the weight distribution, i have never really understood it either.
Title: How long to scrub in new tryes
Post by: Ricco_04 on March 06, 2009, 07:56:02 PM
They are related to the weight.  Heavy diesel engines of old you would always have the front tyres a couple of psi higher.

Also my Westfield,  My tyre pressures are 18psi cause the car is soooo light :yes
Title: How long to scrub in new tryes
Post by: karl_tate on March 06, 2009, 08:08:40 PM
yeh yeh, i worded it a bit wrong. i was thinking along the lines of the performance of the tyre??
Title: How long to scrub in new tryes
Post by: Timmy on March 06, 2009, 08:14:17 PM
It\'s more to do with grip than weight distribution. You start even than asjust depending on over understeer.
Title: How long to scrub in new tryes
Post by: Clarky on March 06, 2009, 08:15:35 PM
Thanks for comments, seem to remember someone told me that regardless of tye size (apart from specials i suppose) stock pressures should be used.
Title: How long to scrub in new tryes
Post by: Jono FD3 on March 07, 2009, 10:02:40 AM
you also have to consider the driven wheels...... they always have a slightly higher perssure as they need to cope with driving the vehicle ;)

Jono