OEM 19" Rays... Tire size suggestions
#32
#34
#36
Do you have any issues with abs or traction control? That is what sales rep told me could happen if I did not followed Nissan's/Infiniti specs of 1/2-3/4" difference between front and rears. I wanted 245/35/19 all around as several seem to run this setup without issues. Do you have pictures of your setup? I am into looks and do not want car to look weird.
#37
#38
here is another way to look at tire size.
255/35/19
Sidewall: 3.5 in
Radius: 13.0 in
Diameter: 26.0 in
Circumference: 81.8 in
Revs/mile: 775.0
255/40/19
Sidewall: 4.0 in
Radius: 13.5 in
Diameter: 27.0 in
Circumference: 84.9 in
Revs/mile: 746.0
So a smaller tire makes 29 more revs per mile.
Say your tire lasts 15k 15000*29= 435000. So through out it's life your larger tire going to turn 435k less than smaller one. 435000/746=583 your smaller tire will wear out 583 miles faster than larger one (giving that during the entire life of both tires they were properly maintained and were subjected to ideal driving conditions)
Obviously there is also difference in cost which plays against larger tires.
And also large tires have more sidewall so handling slightly suffers in the corners, but ride comfort improves.
My main decision points to go with 255/40 in the rear were improved comfort and look of a fat tire.
255/35/19
Sidewall: 3.5 in
Radius: 13.0 in
Diameter: 26.0 in
Circumference: 81.8 in
Revs/mile: 775.0
255/40/19
Sidewall: 4.0 in
Radius: 13.5 in
Diameter: 27.0 in
Circumference: 84.9 in
Revs/mile: 746.0
So a smaller tire makes 29 more revs per mile.
Say your tire lasts 15k 15000*29= 435000. So through out it's life your larger tire going to turn 435k less than smaller one. 435000/746=583 your smaller tire will wear out 583 miles faster than larger one (giving that during the entire life of both tires they were properly maintained and were subjected to ideal driving conditions)
Obviously there is also difference in cost which plays against larger tires.
And also large tires have more sidewall so handling slightly suffers in the corners, but ride comfort improves.
My main decision points to go with 255/40 in the rear were improved comfort and look of a fat tire.
#39
Wow lots of great info! I actually love the wide tire look and if I can find a tire that I can use on the front and rear I will purchase. I currently was interested on 245/35/19 all around but just recently was informed of 245/40/19 all around. If some are using this size please let me know if you recommend this or not. Thank you once again for all your great information!
Last edited by gowner; 10-18-2012 at 07:20 PM. Reason: Spelling
#43
Herrschaft thank you for that information I did think it was weird that the front looked higher. I currently am waiting on receiving my discount tire card to order them. There is a website that does not charge shipping nor taxes as it is outside my state and was cheaper by $15 per tire so Dough (I think that's how you spell his name) from Discount Tire Direct matched the previous (no tax and no shipping) and beat their price by another $15. So at the end I am saving quite a bit. Also, there is now a $70 rebate from Michelin so that will help pay for the insurance. All of this is for the Michelin Pilot Sport A/S 245/35/19 now I need to see if there will be a major price difference for the 245/40/19 which look wider. I need them to be as wide as possible as my wife has scraped my front rims and hope the wider tire will save them a bit.
#45