45 Height Fronts with 40 Height Rears?
#1
05-11-2010, 08:33 PM
45 Height Fronts with 40 Height Rears?
Hey guys,
Long story short, my fronts are 45 in Height and I really need some tires in the back...
Is it a big difference if I stay with 40 height in the back (I currently have 40 in the back but not sure if i should get 45 instead)
Or should I get 45 in the back to match the front?
Thanks
Long story short, my fronts are 45 in Height and I really need some tires in the back...
Is it a big difference if I stay with 40 height in the back (I currently have 40 in the back but not sure if i should get 45 instead)
Or should I get 45 in the back to match the front?
Thanks
#2
05-11-2010, 08:35 PM
#7
05-12-2010, 01:19 AM
Trending Topics
#8
05-12-2010, 01:42 AM
Section Width
Following the letter(s) that identify the type of vehicle and/or type of service for which the tire was designed, the three-digit numeric portion identifies the tire's "Section Width" (cross section) in millimeters.
P225/50R16 91S
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).
225mm / 25.4 = 8.86"
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.
P225/50R16 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 P225/70R16 size, our calculation would confirm that the size would result in a section height of 6.20", approximately a 1.8-inch taller sidewall.
Following the letter(s) that identify the type of vehicle and/or type of service for which the tire was designed, the three-digit numeric portion identifies the tire's "Section Width" (cross section) in millimeters.
P225/50R16 91S
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).
225mm / 25.4 = 8.86"
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.
P225/50R16 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 P225/70R16 size, our calculation would confirm that the size would result in a section height of 6.20", approximately a 1.8-inch taller sidewall.
#9
05-12-2010, 02:23 AM
#10
05-12-2010, 02:55 AM
Listen...
Learn how to read tire sizes. That's why I posted that quote. Look at the what's highlighted in BOLD.
The reason why your 275/40 and 255/40 is different is because to "40" is the percentage of the width of 275 or 255. The "40" is not measured in mm.
40% of 275mm and 255mm will give you different sidewall heights and a different rolling diameter. You want to keep the rolling diameter close to stock.
245/40 and 275/35 have almost the same sidewall height.
Use the OEM tire size as a base when using the calculator to get the right sizes. 225/40/19 front and 245/40/19 rear since your on OEM 19's.
Learn how to read tire sizes. That's why I posted that quote. Look at the what's highlighted in BOLD.
The reason why your 275/40 and 255/40 is different is because to "40" is the percentage of the width of 275 or 255. The "40" is not measured in mm.
40% of 275mm and 255mm will give you different sidewall heights and a different rolling diameter. You want to keep the rolling diameter close to stock.
245/40 and 275/35 have almost the same sidewall height.
Use the OEM tire size as a base when using the calculator to get the right sizes. 225/40/19 front and 245/40/19 rear since your on OEM 19's.
#12
05-12-2010, 01:23 PM
Listen...
Learn how to read tire sizes. That's why I posted that quote. Look at the what's highlighted in BOLD.
The reason why your 275/40 and 255/40 is different is because to "40" is the percentage of the width of 275 or 255. The "40" is not measured in mm.
40% of 275mm and 255mm will give you different sidewall heights and a different rolling diameter. You want to keep the rolling diameter close to stock.
245/40 and 275/35 have almost the same sidewall height.
Use the OEM tire size as a base when using the calculator to get the right sizes. 225/40/19 front and 245/40/19 rear since your on OEM 19's.
Learn how to read tire sizes. That's why I posted that quote. Look at the what's highlighted in BOLD.
The reason why your 275/40 and 255/40 is different is because to "40" is the percentage of the width of 275 or 255. The "40" is not measured in mm.
40% of 275mm and 255mm will give you different sidewall heights and a different rolling diameter. You want to keep the rolling diameter close to stock.
245/40 and 275/35 have almost the same sidewall height.
Use the OEM tire size as a base when using the calculator to get the right sizes. 225/40/19 front and 245/40/19 rear since your on OEM 19's.
Based on this, my fronts are all screwed up when compared to stock size
Theyre off by more than 6%
I see what you mean, 275/35 would be best. I've seen alot of 275/40 for sale, would you really recommend against using those? I know there is a 3.5% difference....
#13
05-12-2010, 01:24 PM
#14
05-12-2010, 07:22 PM
#15
05-12-2010, 09:43 PM
Thanks Jaren,
Based on this, my fronts are all screwed up when compared to stock size
Theyre off by more than 6%
I see what you mean, 275/35 would be best. I've seen alot of 275/40 for sale, would you really recommend against using those? I know there is a 3.5% difference....
Based on this, my fronts are all screwed up when compared to stock size
Theyre off by more than 6%
I see what you mean, 275/35 would be best. I've seen alot of 275/40 for sale, would you really recommend against using those? I know there is a 3.5% difference....
OEM Sizes:
Front: 225/40/19
Rear: 245/40/19
Alternate Sizes Near OEM Diameter:
Front: 255/35/19
Rear: 275/35/19
Either size would work.