ShAkE N BaKe!!

My brakes are almost done which means i will be going to get my tires this weekend. I notices some people run...
for ex. (front-225 40 17 and rear-245 45 17)
-Now my question is, why would you guys get a thicker sidewall up front than the rear? would you want the rear to be thicker?

ky

its thicker out back. 40 < 45. front = 40..... rear = 45

ShAkE N BaKe!!

sorry this is what I meant to say.

ShAkE N BaKe!!

isnt it, the bigger the number is, the wider(sidewall) it is?

JamesW

[blockquote]
P225/50-16
The 225 indicates this tire is 225 millimeters across from the widest point of its outer sidewall to the widest point of its inner sidewall when mounted and measured on a specified width wheel. This measurement is also referred to as the tire's section width. Because many people think of measurements in inches, the 225mm can be converted to inches by dividing the section width in millimeters by 25.4 (the number of millimeters per inch).[/blockquote]
Sidewall Aspect Ratio
Typically following the three digits identifying the tire's Section Width in millimeters is a two-digit number that identifies the tire's profile or aspect ratio.
[blockquote]
P225/50-16 91S
The 50 indicates that this tire size's sidewall height (from rim to tread) is 50% of its section width. The measurement is the tire's section height, and also referred to as the tire's series, profile or aspect ratio. The higher the number, the taller the sidewall; the lower the number, the lower the sidewall. We know that this tire size's section width is 225mm and that its section height is 50% of 225mm. By converting the 225mm to inches (225 / 25.4 = 8.86") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of 4.43". If this tire were a P225/70-16 size, our calculation would confirm that the size would result in a section height of 6.20", approximately a 1.8-inch taller sidewall.[/blockquote]