255/40/18 295/40/19 on stock wheels
09-24-2015, 04:02 PM
#3
Race Director
Be careful when going off OEM sizes to make sure your overall tire diameters stay close to the OEM.
Here are the OEM tire sizes and outer diameters:
F - 245/40/18 = OD of 25.7"
R - 285/35/19 = OD of 26.85"
Your proposed rear size of 295/40/19 will have an overall diameter of 28.3 inches, which is almost 1.5 inches more than OEM - not good. A better choice is 295/35/19 which will be 27.13 inches in diameter, close enough to the OEM size.
Your proposed 255/40/18 are 26 inches in diameter which is pretty close to OEM and therefore OK.
Hope this helps.
Here are the OEM tire sizes and outer diameters:
F - 245/40/18 = OD of 25.7"
R - 285/35/19 = OD of 26.85"
Your proposed rear size of 295/40/19 will have an overall diameter of 28.3 inches, which is almost 1.5 inches more than OEM - not good. A better choice is 295/35/19 which will be 27.13 inches in diameter, close enough to the OEM size.
Your proposed 255/40/18 are 26 inches in diameter which is pretty close to OEM and therefore OK.
Hope this helps.
09-25-2015, 09:43 AM
#4
Burning Brakes
Thread Starter
Be careful when going off OEM sizes to make sure your overall tire diameters stay close to the OEM.
Here are the OEM tire sizes and outer diameters:
F - 245/40/18 = OD of 25.7"
R - 285/35/19 = OD of 26.85"
Your proposed rear size of 295/40/19 will have an overall diameter of 28.3 inches, which is almost 1.5 inches more than OEM - not good. A better choice is 295/35/19 which will be 27.13 inches in diameter, close enough to the OEM size.
Your proposed 255/40/18 are 26 inches in diameter which is pretty close to OEM and therefore OK.
Hope this helps.
Here are the OEM tire sizes and outer diameters:
F - 245/40/18 = OD of 25.7"
R - 285/35/19 = OD of 26.85"
Your proposed rear size of 295/40/19 will have an overall diameter of 28.3 inches, which is almost 1.5 inches more than OEM - not good. A better choice is 295/35/19 which will be 27.13 inches in diameter, close enough to the OEM size.
Your proposed 255/40/18 are 26 inches in diameter which is pretty close to OEM and therefore OK.
Hope this helps.
I deleted post .