Anyone have a older 2010+ Camaro or 2008+ Challenger? (son's daily driver needed)

[njsteve]

Originally Posted by GearheadSS

Those are definitely not the stock size tires for those wheels on a 6th gen. It should have 275/35/20 rear, 245/40/20 front. 315 is way too wide for a stock 9.5" wide rear wheel. Check to see if they have the GM tm and part numbers on them. They could be wider aftermarket replicas. There are a couple of companies that offer wider replicas.

fwiw, the stock ZL1 and SS 1LE rear wheel is a 20x11 and comes with a 305 tire.

I got out the camera and got some backside photos of the spokes and both the front and rear rims are 20" x 8-1/2" wide and part number 23434146.

I dont know why they put the cheapo (Zenna rear and Joyroad in the front) China-manufactured, monster size tires on these narrow rims, but they seem to fit and are flat across the tread with even wear all across. They are around 28-1/2" tall. When it comes time to replace them, we will be getting sizes closer to what should be on the 20" rim. Maybe 255/35x20s (27" tall) all around so they can be rotated? Or the stock size 245/40x20 which is 27-3/4" tall?

[GearheadSS]

Originally Posted by njsteve

I got out the camera and got some backside photos of the spokes and both the front and rear rims are 20" x 8-1/2" wide and part number 23434146.

I dont know why they put the cheapo (Zenna rear and Joyroad in the front) China-manufactured, monster size tires on these narrow rims, but they seem to fit and are flat across the tread with even wear all across. They are around 28-1/2" tall. When it comes time to replace them, we will be getting sizes closer to what should be on the 20" rim. Maybe 255/35x20s (27" tall) all around so they can be rotated? Or the stock size 245/40x20 which is 27-3/4" tall?

Ok so it has a set of squared I4/V6 6th gen 20" wheels on it. SS would have had wider rear wheels on it. Check the RPO codes to see what wheels/tires the car was ordered new with. It would be an 18", 19", 20" or even 21" wheel/tire. It doesn't appear to be an RS so it likely had 18" or 19" when new.

245/45/20 or 275/40/20 are the sizes that will match the oem tire height of the 18 and 19 that it would have come with. 245/45/20 is really what will fit that width of wheel the best but the 275 will work. The 315 tires are almost 3" wider than what should be on that width of wheel.

[njsteve]

The RPO code sticker in the trunk says it came with 18" aluminum wheels originally. We drove the car another 250 miles yesterday to visit my Dad in CT. The car sure cruises nicely and got 27.5 MPG on regular.