Hello All I have a '97 Jeep Grand Cherokee 4wd and I went to a tire shop to have a new BF Goodrich Radial Long Trail T/A (P225 75 R16) put on, and instead the mechanic put on a BF Goodrich Long Trail T/A Tour (P225 75 R16)saying the radial long trail is discontinued. My question is, is it okay to run 3 Radial Long Trails and 1 Long Trail T/A Tour. Will this affect the differential? Any help or advice would be much appreciated. Also, I went to the manufacture's website and found the following differences between the two tires (all other measurements and ratings were the same)Radial Long TrailSidewall - BSWOverall Diameter - 29.6Tread Depth in 32nds - 13Max Load lbs. @ psi 1804@35Long Trail T/A TourSidewall - ORWLOverall Diamter - 29.29Tread Depth in 32nds - 12Max Load lbs. @ psi 1904@50Thanks!
You have just found out why tire manufacturers recomend replacing tires in sets of (4). Even when replacing a discontinued item with the manufacturers suggusted replacement item there are quite often slight variations in size, performance capability etc.. Your having an AWD/4X4 makes this an all important detail to pay attention to. Dont know why you replaced only (1) to begin with but you would be wise to replace the other (3) as soon as possible.