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Wheel fitment for 99-01 different than 02 and above?


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After reading the TSB for "summer tires, wheels and spacers" it looks like the 99-01 will not take a GT3 wheel without rolling the fender, yet the 02 and above will. I'm assuming the 02 and above are slightly wider or have the fenders already rolled. If you notice below, the differences is the GT3 wheel is 13mm closer to the suspension and will stick out 17mm more. In the same TSB it also states that a 17 mm spacer can be used on the 10Jx18 offset 65 with 265 tire without rolling. If this is the case then why can't the GT3 wheel be used without rolling the fender? Has anyone else used the GT3 wheel or other 11" wheels with offset of 63 or less on a 99-01 996 without the need for rolling?

My pss9's go on the car tuesday and new wheels in the future but I'm becoming anal about fitment after reading too many differing opinions about what works and what doesn't.

Thanks for any input or comments

Wheels: Wheel 1 Wheel 2

Wheel size 18x10 ET 65 18x11 ET 63

BackSpace 204 mm (8'') 215 mm (8.4'')

10 mm (0.4'') deeper.

Rim Lip 14 mm (0.6'') wider

Tires: Tire 1 Tire 2

Tire size 265/35-18 295/30-18

Section width 265 mm (10.4'') 295 mm (11.6'')

Sidewall 93 mm (3.7'') 89 mm (3.5'')

Tire diameter 643 mm (25.3'') 635 mm (25'')

Speedometer Assuming that this is OEM tire and speedometer readings are correct When speedometer reads 60mph (96.6km/h) actual speed will be 59.3mph (95.5km/h): 1.2% slower.

Clearance: Package 1 Package 2

Suspension Assuming that this is OEM wheel/tire and there is no any problems with clearance on both sides Package is 13 mm (0.5'') closer to suspension/brakes components. Acceptable for most cars.

Fenders Package will stick out 17 mm (0.7'') farther. Make sure that you have enough room under the fender. If not, consider narrower tires or higher offset.

Wheelwells 100% clear (leaves even more room than OEM)

http://www.bigcustomwheels.com

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After reading the TSB for "summer tires, wheels and spacers" it looks like the 99-01 will not take a GT3 wheel without rolling the fender, yet the 02 and above will. I'm assuming the 02 and above are slightly wider or have the fenders already rolled. If you notice below, the differences is the GT3 wheel is 13mm closer to the suspension and will stick out 17mm more. In the same TSB it also states that a 17 mm spacer can be used on the 10Jx18 offset 65 with 265 tire without rolling. If this is the case then why can't the GT3 wheel be used without rolling the fender? Has anyone else used the GT3 wheel or other 11" wheels with offset of 63 or less on a 99-01 996 without the need for rolling?

My pss9's go on the car tuesday and new wheels in the future but I'm becoming anal about fitment after reading too many differing opinions about what works and what doesn't.

Thanks for any input or comments

Wheels: Wheel 1 Wheel 2

Wheel size 18x10 ET 65 18x11 ET 63

BackSpace 204 mm (8'') 215 mm (8.4'')

10 mm (0.4'') deeper.

Rim Lip 14 mm (0.6'') wider

Tires: Tire 1 Tire 2

Tire size 265/35-18 295/30-18

Section width 265 mm (10.4'') 295 mm (11.6'')

Sidewall 93 mm (3.7'') 89 mm (3.5'')

Tire diameter 643 mm (25.3'') 635 mm (25'')

Speedometer Assuming that this is OEM tire and speedometer readings are correct When speedometer reads 60mph (96.6km/h) actual speed will be 59.3mph (95.5km/h): 1.2% slower.

Clearance: Package 1 Package 2

Suspension Assuming that this is OEM wheel/tire and there is no any problems with clearance on both sides Package is 13 mm (0.5'') closer to suspension/brakes components. Acceptable for most cars.

Fenders Package will stick out 17 mm (0.7'') farther. Make sure that you have enough room under the fender. If not, consider narrower tires or higher offset.

Wheelwells 100% clear (leaves even more room than OEM)

http://www.bigcustomwheels.com

Can anyone confirm if the 996 2002 and above come with factory rolled fenders or do they have the 15-20 mm lip like the 01?

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After reading the TSB for "summer tires, wheels and spacers" it looks like the 99-01 will not take a GT3 wheel without rolling the fender, yet the 02 and above will. I'm assuming the 02 and above are slightly wider or have the fenders already rolled. If you notice below, the differences is the GT3 wheel is 13mm closer to the suspension and will stick out 17mm more. In the same TSB it also states that a 17 mm spacer can be used on the 10Jx18 offset 65 with 265 tire without rolling. If this is the case then why can't the GT3 wheel be used without rolling the fender? Has anyone else used the GT3 wheel or other 11" wheels with offset of 63 or less on a 99-01 996 without the need for rolling?

My pss9's go on the car tuesday and new wheels in the future but I'm becoming anal about fitment after reading too many differing opinions about what works and what doesn't.

Thanks for any input or comments

Wheels: Wheel 1 Wheel 2

Wheel size 18x10 ET 65 18x11 ET 63

BackSpace 204 mm (8'') 215 mm (8.4'')

10 mm (0.4'') deeper.

Rim Lip 14 mm (0.6'') wider

Tires: Tire 1 Tire 2

Tire size 265/35-18 295/30-18

Section width 265 mm (10.4'') 295 mm (11.6'')

Sidewall 93 mm (3.7'') 89 mm (3.5'')

Tire diameter 643 mm (25.3'') 635 mm (25'')

Speedometer Assuming that this is OEM tire and speedometer readings are correct When speedometer reads 60mph (96.6km/h) actual speed will be 59.3mph (95.5km/h): 1.2% slower.

Clearance: Package 1 Package 2

Suspension Assuming that this is OEM wheel/tire and there is no any problems with clearance on both sides Package is 13 mm (0.5'') closer to suspension/brakes components. Acceptable for most cars.

Fenders Package will stick out 17 mm (0.7'') farther. Make sure that you have enough room under the fender. If not, consider narrower tires or higher offset.

Wheelwells 100% clear (leaves even more room than OEM)

http://www.bigcustomwheels.com

Can anyone confirm if the 996 2002 and above come with factory rolled fenders or do they have the 15-20 mm lip like the 01?

Rear fender that is.

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Has anyone else used the GT3 wheel or other 11" wheels with offset of 63 or less on a 99-01 996 without the need for rolling?

I have 18x11 ET 63 wheels with 295/30 on the rear of my '99 C2 and (as noted above) the rear fenders are not rolled.

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  • 3 years later...

After reading the TSB for "summer tires, wheels and spacers" it looks like the 99-01 will not take a GT3 wheel without rolling the fender, yet the 02 and above will. I'm assuming the 02 and above are slightly wider or have the fenders already rolled. If you notice below, the differences is the GT3 wheel is 13mm closer to the suspension and will stick out 17mm more. In the same TSB it also states that a 17 mm spacer can be used on the 10Jx18 offset 65 with 265 tire without rolling. If this is the case then why can't the GT3 wheel be used without rolling the fender? Has anyone else used the GT3 wheel or other 11" wheels with offset of 63 or less on a 99-01 996 without the need for rolling?

My pss9's go on the car tuesday and new wheels in the future but I'm becoming anal about fitment after reading too many differing opinions about what works and what doesn't.

Thanks for any input or comments

Wheels: Wheel 1 Wheel 2

Wheel size 18x10 ET 65 18x11 ET 63

BackSpace 204 mm (8'') 215 mm (8.4'')

10 mm (0.4'') deeper.

Rim Lip 14 mm (0.6'') wider

Tires: Tire 1 Tire 2

Tire size 265/35-18 295/30-18

Section width 265 mm (10.4'') 295 mm (11.6'')

Sidewall 93 mm (3.7'') 89 mm (3.5'')

Tire diameter 643 mm (25.3'') 635 mm (25'')

Speedometer Assuming that this is OEM tire and speedometer readings are correct When speedometer reads 60mph (96.6km/h) actual speed will be 59.3mph (95.5km/h): 1.2% slower.

Clearance: Package 1 Package 2

Suspension Assuming that this is OEM wheel/tire and there is no any problems with clearance on both sides Package is 13 mm (0.5'') closer to suspension/brakes components. Acceptable for most cars.

Fenders Package will stick out 17 mm (0.7'') farther. Make sure that you have enough room under the fender. If not, consider narrower tires or higher offset.

Wheelwells 100% clear (leaves even more room than OEM)

I know this is an old thread, but I'm about to order Porsche OEM Sport Techno wheels with 11x18 ET 63 and 295/30x18 rears for my 2001 C2 (narrow body). This is the same as the GT3 spec, so I'm wondering whether I need to get the rear fenders rolled. Pac911, how did this work out for you? Did you get the GT3 wheels without fender rolling? In the event I need to get the rear fenders rolled, how big an expense is this? Thanks.

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After reading the TSB for "summer tires, wheels and spacers" it looks like the 99-01 will not take a GT3 wheel without rolling the fender, yet the 02 and above will. I'm assuming the 02 and above are slightly wider or have the fenders already rolled. If you notice below, the differences is the GT3 wheel is 13mm closer to the suspension and will stick out 17mm more. In the same TSB it also states that a 17 mm spacer can be used on the 10Jx18 offset 65 with 265 tire without rolling. If this is the case then why can't the GT3 wheel be used without rolling the fender? Has anyone else used the GT3 wheel or other 11" wheels with offset of 63 or less on a 99-01 996 without the need for rolling?

My pss9's go on the car tuesday and new wheels in the future but I'm becoming anal about fitment after reading too many differing opinions about what works and what doesn't.

Thanks for any input or comments

Wheels: Wheel 1 Wheel 2

Wheel size 18x10 ET 65 18x11 ET 63

BackSpace 204 mm (8'') 215 mm (8.4'')

10 mm (0.4'') deeper.

Rim Lip 14 mm (0.6'') wider

Tires: Tire 1 Tire 2

Tire size 265/35-18 295/30-18

Section width 265 mm (10.4'') 295 mm (11.6'')

Sidewall 93 mm (3.7'') 89 mm (3.5'')

Tire diameter 643 mm (25.3'') 635 mm (25'')

Speedometer Assuming that this is OEM tire and speedometer readings are correct When speedometer reads 60mph (96.6km/h) actual speed will be 59.3mph (95.5km/h): 1.2% slower.

Clearance: Package 1 Package 2

Suspension Assuming that this is OEM wheel/tire and there is no any problems with clearance on both sides Package is 13 mm (0.5'') closer to suspension/brakes components. Acceptable for most cars.

Fenders Package will stick out 17 mm (0.7'') farther. Make sure that you have enough room under the fender. If not, consider narrower tires or higher offset.

Wheelwells 100% clear (leaves even more room than OEM)

I know this is an old thread, but I'm about to order Porsche OEM Sport Techno wheels with 11x18 ET 63 and 295/30x18 rears for my 2001 C2 (narrow body). This is the same as the GT3 spec, so I'm wondering whether I need to get the rear fenders rolled. Pac911, how did this work out for you? Did you get the GT3 wheels without fender rolling? In the event I need to get the rear fenders rolled, how big an expense is this? Thanks.

There is a difference in rear suspension between mk1 and mk2 996 NB that allows a mk2 NB to fit a wider wheel and still clear the fender.

However, 18x11 et 63 on 295/30/18 should fit a mk1 NB assuming stock suspension and alignment.

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  • 2 weeks later...

Well, I ordered the wheels. When the tires are on, I'll try them out and see if they rub in the rear. I called a shop that can roll the fenders lips, and it's not a lot of money, but they did advise me that since it involves bending the fender lip, the paint might crack and need to be touched up inside the lip. So, for various reasons, I'm noping I don't need to have it done.

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  • 2 months later...

I hate to restart and bump a thread but I have tire fitment question. I just ordered new rims to replace my 19's on my 2000 996 C2. I have gone to 18's this time around. Now, my question is, what size tires to get for the new wheels. I couldnt find a reverse calculator online to compute it.

My new wheel sizes are:

18" x 8.5 Front ET 52

18" x 10 Rear ET 58

Suspension is completely stock. Thanks for any help guys!

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