Kipper Report post Posted March 12, 2020 Hello Members, can someone please assist. I understand that the tyre topic has been done to death but can someone please give me a simple direction on which tyres to install on my 02 Murci Currently have original speedline wheels 18" do not want to use Rosso tyres, (even though i can buy them i dont like them) I am told that i cannot get Corse system tyres here in Australia? Option with change of wheels given to me is 255/35/19 front & 345/30/19 Rear difference is 28.5mm roll out Original combo is 29.5mm? roll out I would like to retain the original 18" wheel if possible If i have to go for different combination what roll out difference can i get away with using 4WD Your suggestions will be appreciated Kipper Quote Share this post Link to post Share on other sites More sharing options...
whiteout Report post Posted March 17, 2020 Here is my write up on the tire size: http://lambodiy.blogspot.com/p/correct-tire-size.html Quote Share this post Link to post Share on other sites More sharing options...
Kipper Report post Posted March 23, 2020 Thanks Whiteout Really helpful i will work on this using 19 inch wheels, I think i can get a range of Cup2 tyres that will work this ratio Thank you very much Also can you confirm how much longer it will be before you will have 02 ignition coils ready to ship? Kipper Quote Share this post Link to post Share on other sites More sharing options...
gmendoza Report post Posted May 28, 2020 I did the math to calculate the difference between the gearing of the front axle vs the rear axle. I came up with 7%. OEM tires have a difference of about 6% front to rear. From what I've seen, 4% difference is enough to cause damage on a long distance and/or high speed drive. As long as you end up with a 5-7% difference, you should be OK. Side note, it seems like the latest version of the front Rosso is borderline too tall according to tire rack for my liking. P ZERO CORSA SYSTEM specs are still spot on. Quote Share this post Link to post Share on other sites More sharing options...
chucklehead Report post Posted November 19, 2020 On a side note, the Pirelli P Zero Rosso tires in 18" are available through Tire Rack now. Just bought a set to keep for the future, driving with P Zero Corsa but they wear out fast. Quote Share this post Link to post Share on other sites More sharing options...
Destructo Report post Posted November 24, 2020 On 11/19/2020 at 2:20 PM, chucklehead said: On a side note, the Pirelli P Zero Rosso tires in 18" are available through Tire Rack now. Just bought a set to keep for the future, driving with P Zero Corsa but they wear out fast. For future use, how are you storing them? Not a bad idea to have an extra set on hand for sure! Quote Share this post Link to post Share on other sites More sharing options...
Nuvolari Report post Posted November 24, 2020 The items that age tires are UV light and heat cycles. So long as a tire has not had its FIRST heat cycle the aging process is very slow and tires can be stored for many years. The real acceleration of aging happens as tires heat and cool due to use (way more temperature variation than what is possible in storage). It is after the first heat cycle that the effective life of a tire is no more than 10 years. Regarding storage placing tires in black plastic bags to keep the UV light out and storing them in a dry place that never goes below freezing is fine. Quote Share this post Link to post Share on other sites More sharing options...
Destructo Report post Posted November 24, 2020 43 minutes ago, Nuvolari said: The items that age tires are UV light and heat cycles. So long as a tire has not had its FIRST heat cycle the aging process is very slow and tires can be stored for many years. The real acceleration of aging happens as tires heat and cool due to use (way more temperature variation than what is possible in storage). It is after the first heat cycle that the effective life of a tire is no more than 10 years. Regarding storage placing tires in black plastic bags to keep the UV light out and storing them in a dry place that never goes below freezing is fine. Good to know, thanks for sharing! Quote Share this post Link to post Share on other sites More sharing options...
chucklehead Report post Posted November 26, 2020 I have them in the cellar. I'll place them in some garbage bags for the UV protection. Thx Quote Share this post Link to post Share on other sites More sharing options...
Kenny94945 Report post Posted November 26, 2020 I can agree about about a 10 year life if care is taken. FWIW, in my history I have had issue with tire shops not wanting to mount tires over 5 years old. Quote Share this post Link to post Share on other sites More sharing options...
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