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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBBS E88 size fitment?
Leading reported evidence
Run 18x9 et42.3 front and 18x11 et64 rear
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I'm running 18x9 ET42.3 front and 18x11 ET64 rear.
Leading evidence: 'Run 18x9 et42.3 front and 18x11 et64 rear' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean fitment' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion · Original poster
Hey Guys i have a 99 c2 with factory Aero and im looking for a clean fitment with 18" e88's anyone know the size and et i need?
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8 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Hey Guys i have a 99 c2 with factory Aero and im looking for a clean fitment with 18" e88's anyone know the size and et i need? I see a much of different ones.
I'm running 18x9 ET42.3 front and 18x11 ET64 rear. Fronts are 0288120 centers with 1.5" outer (01.82.042) and 7.5" inner (01.83.054) barrels. Rears are 0288108 centers with 2" outer (01.82.043) and 9" inner (01.83.057).
Here are the specs on my front wheels. I forgot to take a picture of the rears. Here is a thread to get some good info, or just call Eric at supreme.
245/40 18 & 295/30 18 Michelin 4s
BBS E88 sizes and tyre sizes - Page 8 - Rennlist - Porsche Discussion Forums
I�m your guy. The 0288170 has 52mm of rim flange height, or 20mm more than the common 0288108. The -170's bores are 33mm long so if taking off 20mm you'll still have sufficient bore length, however the center bore is tapered and will end up being at least a mm larger and you will end up with about 5mm less brake room compared to the -108 due to differences in the back of spoke profile. Many 0288170 pop up for sale as there were so many made for Porsche Grand Am and IMSA GTD series cars. The 0288170 makes the same offsets with the same rim half combinations as the 997 Cup Car centers, just with the rims behind the center and with a little more brake room.
I have attached the offset charts for the 0288170, 0288108 and the 0288180, though that is a 5 x 114.3
Ford center made for 5/8" studs and thin 90 degree seats.
Some raw data
0288170 : E88 Wheel Center - PORSCHE 5x130 /
Centerlock - 24 Bolt Center - 18-19" - Ultra Lightweight Back milled Forged Aluminum - Silver - GENUINE
BBS Motorsport
Example with this center:
997.1 GT3 : Wheel sizes Center PN 0288170
F: 18x9 (8.00 Inch Inner Rimhalf / 1.00 Inch Outer
Rimhalf Lip)
R: 18x12 (9.50 inch Inner Rimhalf / 2.50 Inch Outer
Rimhalf Lip)
The 0288170 is way too much flange height for the
964. You need either 0288108 / 1.0 / 7.0 +51 and
0288108 / 2.0 / 8.0 +51, the 0288623 / 2.0 / 6.0 +47 and 0288623 / 3.0 / 7.0 +47.
The 0288170 / 1.0 / 7.0 makes ET +31
From the 997.1 GT3 Narrow Body Notes:
With 0288170 centers you end up with the following offsets:
18x9 (8 inch inner barrel 1 inch lip) ET43.5
18x12 (9.5 inch inner barrel 2.5 inch lip) ET43.5
十十十+
997 Carrera S Less aggressive / standard brake
0288120 / 1.0 / 7.5 ЕТ + 49.0
0288107 / 2.5 / 8.5 ЕТ + 55.0
997 Carrera S More aggressive / РССВ
0288274 / 1.0 / 8.0 ЕТ + 50.0
0288107 | 2.5 / 8.5 ET + 55.0
997 Turbo Less aggressive / Standard Brake
0288120 / 1.0 / 7.5 ET + 49.0
0288108 / 3.0 / 8.5 ЕТ + 44.5
997 Turbo More aggressive / PCCB
0288274 / 1.0 / 8.0 ET + 50.0
0288107 / 3.5 / 8.5 E1
1140
I have spec sheets that I�ll upload later to make your life so much easier. Your 1st concern is to find out what E88 face you�re getting.
This is a source reference. Confirm exact model applicability in the original material.
