They will both throw the speedo off nearly equally, although in opposite ways. 245/35 = +2.1%; 245/40 = -1.5%altima777 wrote:Not too sure if the 40 series would throw off the speedo a bit?
+1 to that... im on 245/35/20 on my 20x8.5'smrodrig2 wrote:
They will both throw the speedo off nearly equally, although in opposite ways. 245/35 = +2.1%; 245/40 = -1.5%