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Z51JEFF
12-05-2016, 10:55 AM
What kind of spare options for a car with a 13.5 front rotor with C4 calipers. Thanks.

secondchance
12-05-2016, 11:35 AM
What kind of spare options for a car with a 13.5 front rotor with C4 calipers. Thanks.

Early 2004-6 Pontiac GTO, I believe, offered 17" spares. I'm not sure it would clear 13.5" rotor.

I carry Cadillac CTS-V, 18" spare wheel. These certainly will fit 13.5" rotor.

XfireZ51
12-05-2016, 01:18 PM
With C6 Z06 brakes, I face this issue as well. Somebody makes a spare fir the Z06 crowd but they want $900 for it. May look for a C6 wheel/tire.
Does the CTSV have any offset issue. I believe the GTO spare requires a spacer.
I pretty much have settled on the Continental kit w pump and sealant. No good solution when u run staggered wheel sizes.

BigJohn
12-05-2016, 02:59 PM
What kind of spare options for a car with a 13.5 front rotor with C4 calipers. Thanks.

Purchase another front wheel and tire it will fit in the back carrier.
Try it with the wheel you have!

secondchance
12-05-2016, 03:29 PM
With C6 Z06 brakes, I face this issue as well. Somebody makes a spare fir the Z06 crowd but they want $900 for it. May look for a C6 wheel/tire.
Does the CTSV have any offset issue. I believe the GTO spare requires a spacer.
I pretty much have settled on the Continental kit w pump and sealant. No good solution when u run staggered wheel sizes.

Any spare, as long as it clears brake caliper and rotor, is acceptable. Spare tire is a temporary solution. CTS-V spare works. Offset issue? No issue when discussing spare tire, in my opinion.

mike100
12-07-2016, 12:14 PM
the gto spare doesn't need a spacer, but it does need .030 or so ground out of the center hub hole to fit a c4/c5 hub. technically the bolt pattern is a tad different, but it fits fine. I drove mine up to 70 mph etc- no issues.

secondchance
12-07-2016, 12:19 PM
the gto spare doesn't need a spacer, but it does need .030 or so ground out of the center hub hole to fit a c4/c5 hub. technically the bolt pattern is a tad different, but it fits fine. I drove mine up to 70 mph etc- no issues.

Same with CTS-V spare. Center hub hole had to be bored out lightly.

Z51JEFF
12-09-2016, 06:05 AM
I think a CTS-V spare is in the works. Thanks for all the info.