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Application Guide

 

First off let me disclose that these are recommendations for using newer wheels on older cars and also upgrading your newer vehicle. There are by no means for us to state facts on every car that was produced. The recommendations are from cars we have done. Use it at your own risk. If you need help just give me a call even if you did not buy the wheels from us.

There are many wheels and myriad of sizes and offsets that came from the factory. Some wheels are not approved for certain models because the wheel and tire technology was not in use when these cars were made. 

 I believe the single most improvement on your car for performance can be the right wheel and tire set up. It not only will improve handling but also braking when updating your car to the latest wheel and tire set up. It is just like playing basket ball with an old set on Converse Chuck Taylor's. The shoes have little to no support and about the same on the sole. As soon as you slip on a new pair of Jordan's you realize how shoes have improved. It is the same with your wheel and tire set up.

Porsche is moving to larger and larger wheel diameters for numerous reasons. Back in the 80's 16" wheels were the state of the art now Porsche has moved into the 19" diameter wheel range with the overall diameter of the wheels and tire just about that as the 16" wheels used in the 80's. So you too can benefit from larger diameter wheels for your older car.  

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944 83-85.5  Stock 15x7 et 23.3mm Can use most 17" & 18" 50-65mm et wheels with 1" to 1 1/2" spacers

Front hubs have a long shaft some spacers will not go on properly if hub centric part is not cut deep enough

17x7et 55mm and 17x9 et55mm one inch spacers front and rear below.
944 85.5-86

including turbo

 Stock 15x7 et 23.3mm Can use most 17" & 18" 50-65mm et wheels with 1" to 1 1/2" spacers

Most extreme fitment -Front 18x9 et 52mm one inch spacers. Rear 18x11 et45mm 1/4 spacer to no spacer- depends on car.

18x10 et 40mm fits nicely with no spacer on the rear with 265/35/18 to 285/30/18 tire.

With 18x11 et 45mm wheels you will need to reverse the top shock tower bolt.

Front hubs have a long shaft some spacers will not go on properly if hub centric part is not cut deep enough

18x8et 50mm(1" spacers) and 18x11 et45mm on 1986 944 turbo below
944 87-91

Including turbo

968 93-95

  No spacers needed for newer17"- 18" wheels in the 48 mm-65mm et range. All 986, 996, 997, part# wheels will require a 1/4" (7mm) for the front hub. This is so the wheels will mount flush on the hub. This is needed for all newer wheels. 993 part# wheels will not need the spacer.

Most extreme fitment-Front 18x9 et52mm -Rear 18x11 et65mm

18x8et 50mm and 18x10et 65mm on 1991 944 S2 below
928 78-85  Can use all of the narrow body wheels from 993-986-996-997 50mm -65mm et front and 48mm - 65mm et rear. 1981 to 1984 cars have 21mm spacers in the rear. These can be removed to fit  some wide body wheels. (18x10 40mm 18x11 45mm) You may still need to do some fender mods depending on the tire size.

Most extreme fit 18x10 et65mm front and 18x11 et45mm-63mm. The 18x11 et63mm wheel fits nicely on the rear with a 285/30/18 tire. 19"s fit very nicely on the car

18x8et 50mm and 18x11et 45mm below
928 86-91 Can use all of the narrow body wheels from 993-986-996-997 50mm -65mmet front and 48mm-65mm et rear. Some manual 89gt cars have 17mm spacers in the rear so you may have to chuck them when using wider wheels and tires

Most extreme fit 18x10 et65mm on all four corners. The 18x11 et63mm wheel fits nicely on the rear with a 285/30/18 tire. 19"s are possible

18x8et 50mm and18x10et 65mm below
928 GTS Can use all of the narrow body wheels from 993-986-996-997 50mm-65mmet  front and 48mm-65mm et rear. Cars have spacers in the rear for the flared fenders. These can be removed to use wide body wheels.

Most extreme fit 18x10 et65mm on all four corners. The 18x11 et63mm wheel fits nicely on the rear with a 285/30/18 tire. 19"s are possible

18x8et 50mm and 18x10et 65mm below
Boxsters Can use most wheels from the 996 with spacers in the rear.  40mm-65mm et front and 40-50mm et rear (Stock 18x10 is 47mm) the 18x10et 65mm 996 wheel will require a 15mm spacer to clear the shock.

Most extreme is the Techart 18x10.5 et 42mm wheel for the rear. Use zip ties for the parking brake cable. 285/30/18 tire is about the largest you can use.

Can use 19' from 987

Most extreme fit 20x9 et50mm and 20x10 et 60mm(15mm spacer) with 245/30/20 and 285/20/20

20x9et 50mm and 20x10et 60mm below
911 78-89 Newer wheels on these cars can be done with spacers. Offset similar to early 944 23.3 front and 15mm rear. The wheels will need to be no wider than 9" on the rear. 10" to 11" rears will work but there are some modifications needed to a few things trailing arm bolt, passenger side oil lines, fender rolling, and proper tire choice to name a few.

911SC with 18x8 et50mm on all for corners. 7mm spacer front and 25mm spacer rear.

 
911 89-94

(AKA 964)

 This car is known as the 964. Same fenders as earlier cars but a totally new suspension. New offset for the 911. Now the car is inline with the rest of the Porsche models for offset. Car can run most of the newer wheels. Boxster wheels work best as some later model Carrera wheels will need a spacer to bring them out. The car works with 8"-9" wheels with offsets from 45mm to 60mm in the front. Rear the offset needs to be 58mm or lower for 9" and 10" wheels. The turbo version 965 uses the same offset wheels as the narrow body. This confuses most people thinking they can use later model wide body wheels on these cars. 

93 Carrera RS 18x8 et52mm 18x10 et58mm
911 95-98

(AKA 993)

 This car is known as the 993. There are two versions of this car the narrow body and the wide body versions C2S, C4S, and the Turbo. Offsets for this car is generally 8"-9" front with 45mm -55mm. The Narrow body rear uses 9" with 55mm offset and a 10" with 47mm to 65mm offset. With the 47mm you will have to watch the tire size. The car can use 19" wheels but the rear wheels can be no wider than 10.5" . Wide body cars can use the 996 wide body wheels in 18x11 et45mm for the rear.

19x8.5 et46mm 19x10 et56mm

 

911 99-01

911 02-04

(AKA 996)

 

 

This car has an early version and a late version plus a wide body.  All the cars typically have either 7.5" or 8" wheels with a 50mm offset in the front. GT2 GT3 18x8.5 offset 40mm front. The rear is typically the 18x10 offset 65mm. The 99-01 cars have a little narrower track in the rear but use the 65mm offset wheel. On the 99-01 cars you can use up to 11" wide rears with an offset of 52mm. The factory 997 wheel in 19x11 offset 67mm will need a small spacer in the rear with some tires. The 2002 and up cars do not have this issue as the track was slightly widened. GT3 is 18x11 offset 63mm.

2000 911 19x8 et45mm 19x11 et52mm

2002 19x8 et57mm 19x11 et67mm no spacer 315-25-19 rear tire

 
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