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Rim Questions (offset and clearance)


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Hello,

This place has been a wealth of information :). I had a question about a specific rim issue on a 2000 996 C2 Cabrio. I was looking at getting these rims...

http://cgi.ebay.com/ebaymotors/Porsche-Box...%3A1|240%3A1318

I really like the look of those rims. Some searching revealed that it was a BSA 215 type rim (this one is made by a different vendor).

The seller claims that he has a wide variety of offsets for that rim, one interesting fact he claims is that the narrow body can take a 18x10 et 40mm in the rear and swears that it can run a 265/35ZR18 tire. He claims it gives a 3" lip in the back. The weight of the rim for a cast rim is attractive as well.

Question 1: Is that even feasible in this car?. Most rims I see for the narrow bodies are et58 or et52.

Question 2: Another twist to the mix. I found another set of rims from another vendor.

http://www.usarim.com/porsche-staggered-bl...ebd471gnjdthhi7

This guy claims that his rear rim is an 18x10 et58 and it has a 3" lip in the rear too???. I thought more offset = less lip?.

Question 3: In either case if I run a 285 tire instead of a 265 tire, would it rub?. Is there any benefit in going wider tire?.

It has totally got me confused.

Thanks in advance,

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No way will a 40 offset work on the rear of a NB. The lower the offset number the farther out the wheel is. Spacers will only move the wheel farther out. Go to 1010 tires and use their offset calculator and compare the stock 65 offset to a 40 offset. Won't work.

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I've seen many BSA wheels & they will fit fine.

"I thought more offset = less lip?." not necessarily,,,

I got a set of your second option on my 986S. Yes U can believe what he is claiming, rear lip is actually a bit more than 3".

both wheels will fit fine, may need a pair spacers on the front.

post-23680-1229216972_thumb.jpg

post-23680-1229217039_thumb.jpg

Hello,

This place has been a wealth of information :). I had a question about a specific rim issue on a 2000 996 C2 Cabrio. I was looking at getting these rims...

http://cgi.ebay.com/ebaymotors/Porsche-Box...%3A1|240%3A1318

I really like the look of those rims. Some searching revealed that it was a BSA 215 type rim (this one is made by a different vendor).

The seller claims that he has a wide variety of offsets for that rim, one interesting fact he claims is that the narrow body can take a 18x10 et 40mm in the rear and swears that it can run a 265/35ZR18 tire. He claims it gives a 3" lip in the back. The weight of the rim for a cast rim is attractive as well.

Question 1: Is that even feasible in this car?. Most rims I see for the narrow bodies are et58 or et52.

Question 2: Another twist to the mix. I found another set of rims from another vendor.

http://www.usarim.com/porsche-staggered-bl...ebd471gnjdthhi7

This guy claims that his rear rim is an 18x10 et58 and it has a 3" lip in the rear too???.

Question 3: In either case if I run a 285 tire instead of a 265 tire, would it rub?. Is there any benefit in going wider tire?.

It has totally got me confused.

Thanks in advance,

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I've seen many BSA wheels & they will fit fine.

"I thought more offset = less lip?." not necessarily,,,

I got a set of your second option on my 986S. Yes U can believe what he is claiming, rear lip is actually a bit more than 3".

both wheels will fit fine, may need a pair spacers on the front.

post-23680-1229216972_thumb.jpg

post-23680-1229217039_thumb.jpg

Thanks juniinc for that photo :). That second set was my first option actually, because I used to like the SSR GT3 rim and the company seems to have vanished.

Front:

18x8.5 et52 - 26lbs - 1.5" lip

Rear

18x10 et58 - 28lbs - 3" lip

Whereas the first set would have been a couple lbs lighter thats all.

a. Did you get it from the same place (usarim.com / eurotech wheels)?. I had a friend of mine in San Diego, check the shop out it seems legit.

b. The second rim dealer said its a standard offset for the 911 in the front and it should fit with no spacers

c. The rim that you have is it a truly polished lip or is it a stainless steel snap on piece?.

The usarim guy is really slow in response to emails.

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anytime RC, great choice by the way

a.yes Eurotech wheels(life time warranty)

b.That's what they told me too-my stock offset was ET50, 2mm was barely rubbing

c.not a SS snap on piece, truly polished chrome

post-23680-1229234241_thumb.jpg

I've seen many BSA wheels & they will fit fine.

"I thought more offset = less lip?." not necessarily,,,

I got a set of your second option on my 986S. Yes U can believe what he is claiming, rear lip is actually a bit more than 3".

both wheels will fit fine, may need a pair spacers on the front.

post-23680-1229216972_thumb.jpg

post-23680-1229217039_thumb.jpg

Thanks juniinc for that photo :). That second set was my first option actually, because I used to like the SSR GT3 rim and the company seems to have vanished.

Front:

18x8.5 et52 - 26lbs - 1.5" lip

Rear

18x10 et58 - 28lbs - 3" lip

Whereas the first set would have been a couple lbs lighter thats all.

a. Did you get it from the same place (usarim.com / eurotech wheels)?. I had a friend of mine in San Diego, check the shop out it seems legit.

b. The second rim dealer said its a standard offset for the 911 in the front and it should fit with no spacers

c. The rim that you have is it a truly polished lip or is it a stainless steel snap on piece?.

The usarim guy is really slow in response to emails.

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anytime RC, great choice by the way

a.yes Eurotech wheels(life time warranty)

b.That's what they told me too-my stock offset was ET50, 2mm was barely rubbing

c.not a SS snap on piece, truly polished chrome

post-23680-1229234241_thumb.jpg

Nice ride!. Is that 18" or 19"?, according to usarim.com they recently came out with the same rim in 18". How did you order?. Online / Phone?.

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You might want to check out www.wheeldynamics.com I bought some wheels from them a year or so ago and they had a good selection and pricing was very good. Service was top notch. I have no association with them other than a customer. The guys there are very familiar with Porsche's and if they tell you it will fit, it will. My wheels are 18x11 rear with 63 et and I am running 285/30/18 tire with no rub issue. My car is a MY 99 C2 Cab.

Will

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Thanks :D .

they are 18" I get that question all the time 18'' or 19"?

I ordered online then confirmed over the phone.

http://www.renntech.org/forums/index.php?s...c=16783&hl=

anytime RC, great choice by the way

a.yes Eurotech wheels(life time warranty)

b.That's what they told me too-my stock offset was ET50, 2mm was barely rubbing

c.not a SS snap on piece, truly polished chrome

post-23680-1229234241_thumb.jpg

Nice ride!. Is that 18" or 19"?, according to usarim.com they recently came out with the same rim in 18". How did you order?. Online / Phone?.

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  • 2 weeks later...
You might want to check out www.wheeldynamics.com I bought some wheels from them a year or so ago and they had a good selection and pricing was very good. Service was top notch. I have no association with them other than a customer. The guys there are very familiar with Porsche's and if they tell you it will fit, it will. My wheels are 18x11 rear with 63 et and I am running 285/30/18 tire with no rub issue. My car is a MY 99 C2 Cab.

Will

Thanks for the tip :). The only problem with wheeldynamics is that they don't carry 18"s in a lot of the types..example miro 371 on their website is 19+ only.

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Proper offset for a MY2000 Carrera for 18" wheels is:

Front - 50 to 52 mm

Rear - 63 to 65 mm

You may be able to achieve this with spacers - but you will need to check for rubbing/fit.

What about running 40mm offset up front? (I'm trying for some 996GT3 wheels on my 01C4. offset 40 front, 63 rear)

Should only stick out 10mm each side further, right?

I would think it would be barely noticeable.

Besides looks, would handling/perf be affected at all?

Any 996 narrow bodies already have some 18x8.5 offset40/18x11 offset 64 installed? pics?

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