Spare tires options for big brakes. - ZR-1 Net Registry Forums

Z51JEFF · 12-05-2016

What kind of spare options for a car with a 13.5 front rotor with C4 calipers. Thanks.

secondchance · 12-05-2016

Quote:

Originally Posted by Z51JEFF

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

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

Quote:

Originally Posted by Z51JEFF

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

Quote:

Originally Posted by XfireZ51

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

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

Quote:

Originally Posted by mike100

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

I think a CTS-V spare is in the works. Thanks for all the info.

12-05-2016	#1
Z51JEFF Join Date: Dec 2007 Location: Fremont, CA Posts: 3,087	Spare tires options for big brakes. What kind of spare options for a car with a 13.5 front rotor with C4 calipers. Thanks.

12-05-2016	#3
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,685	Re: Spare tires options for big brakes. 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.

12-07-2016	#6
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,786	Re: Spare tires options for big brakes. 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.

12-09-2016	#8
Z51JEFF Join Date: Dec 2007 Location: Fremont, CA Posts: 3,087	Re: Spare tires options for big brakes. I think a CTS-V spare is in the works. Thanks for all the info.