I didn't know if the following information was on the Forum or not. So, I thought I'd post.
At the Detroit Rally, I cornered Mark McGowan (of 212 MPH @ Nardo fame) and asked him some questions about our tires. Here are his conclusions. All the major tire manufacturers submitted multiple tires to be considered. The two finalist were Michelin and Goodyear. Goodyear was chosen because they agreed to work closely with the team and develop the perfect tire for the GT. I asked about going to wider tires, larger wheels and tires, etc. for both the front and back. He said that all the different sizes were tested and the OEM tires were the very best to work with the vehicle's drag, down force, weight, aero set up, etc. Mark said that the internal construction of the tire is more important than the width or profile. Our tires have been specially constructed by Goodyear for our cars.
Today, I got a mirror and a flashlight and recorded the DOT and CPER information off of the inside of the side walls for our tires (at least the MY 2005s). Here is all the information for our tires:
Goodyear F-1 Supercar
Front:
P235/45 ZR-18 (88Y)*
DOT M6X6 CPER 1805
Rear:
P315/40 ZR-19 (103Y)*
DOT M6Y5 CPER 2005
* The parentheses are important. They indicate greater than 186 mph.
Mark said that it is the DOT information to use to make sure you get the exact same tire. It represents the construction information submitted to the Dept. of Transportation.
Hope this is helpfull.
At the Detroit Rally, I cornered Mark McGowan (of 212 MPH @ Nardo fame) and asked him some questions about our tires. Here are his conclusions. All the major tire manufacturers submitted multiple tires to be considered. The two finalist were Michelin and Goodyear. Goodyear was chosen because they agreed to work closely with the team and develop the perfect tire for the GT. I asked about going to wider tires, larger wheels and tires, etc. for both the front and back. He said that all the different sizes were tested and the OEM tires were the very best to work with the vehicle's drag, down force, weight, aero set up, etc. Mark said that the internal construction of the tire is more important than the width or profile. Our tires have been specially constructed by Goodyear for our cars.
Today, I got a mirror and a flashlight and recorded the DOT and CPER information off of the inside of the side walls for our tires (at least the MY 2005s). Here is all the information for our tires:
Goodyear F-1 Supercar
Front:
P235/45 ZR-18 (88Y)*
DOT M6X6 CPER 1805
Rear:
P315/40 ZR-19 (103Y)*
DOT M6Y5 CPER 2005
* The parentheses are important. They indicate greater than 186 mph.
Mark said that it is the DOT information to use to make sure you get the exact same tire. It represents the construction information submitted to the Dept. of Transportation.
Hope this is helpfull.
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