Alignmen specs for 981 spyder?
10-05-2018, 01:07 PM
#16
Rennlist Member
Toe is going to cause wear across the entire tire. With deeper tread you'd see the edges of the blocks feathering. Outside edges of each block indicating toe in. Inside edges indicating toe out. I didn't think toe was a problem with these tires because I didn't see any feathering, but the excessively low remaining tread made it hard to tell. Seeing the numbers it now makes a lot more sense.
Last edited by SpyderSenseOC; 10-05-2018 at 02:14 PM.
10-05-2018, 02:11 PM
#17
My understanding was always that toe-out was expressed in the printouts as a negative number while and toe-in was expressed as a positive measurement. And historically, I thought toe measurements were shown in inches and not degrees. Maybe things have changed since the 90's. lol
As for things changing, I think it's just how the laser / digital machines are designed. What was once done with bars, strings, and rulers is now mostly automated. I still think of things in inches, but then have to do the math and convert to degrees in order to tell the technician a useful value.
10-05-2018, 11:33 PM
#18
Having alignment checked on my 981 spyder with 8K miles. Wore the rear OEM Pirellis down to the cord in 7K miles. Car never tracked or autocrossed. Used for weekend cruising and "spirited" driving. Any suggestions on specs or leave it "factory" which it may not be considering tire wear. I know I've always gone through 2 sets of rears to one set of fronts on most P cars I've owned and expected this type of wear on my 2 previous GT3's, but didn't expect it with the Spyder.
Ideas?
Ideas?
edit: after seeing your alignment/tire pictures -- I think I'm going to have mine checked! Yikes! I recently had my biennial service completed at Penske (about 300 miles ago) and tires checked out OK, but they only have about 2500 miles on them.