Hello guys. Can someone please post a pic of WB rear offset wheel 51mm installed on a nb car? Will I have to get alignment done after installing the widebody wheels? I'm assuming i need an alignment since i'm going wider offset. Maybe i'm wrong. What is the downside of putting of wb offset wheels on a nb car? thanks

 

Wrong offsets and no way to cure it. I tried a set and promptly returned them (the seller said they were NB wheels and made an error - no harm done). These were aftermarket and I think the offset was 46 - so maybe 51 will work better. I've seen some guys use Turbo wheels on NB and it looked OK. Can't imagine why you'd need a new alignment, you aren't raising or lowering ride height / changing the geometry. You are just shifting the outside edges of the tires on the rear slightly.

Downside would be they could look silly - when I tried the WB wheels, the look was laughable - with the tires sticking way out past the wheel wells.

 

Ron, the 12" Fikses rears you run on your car have the same frontspace as the widebody 11" rears (yes i calculated this) i was really wondering about the 9" fronts, didnt they stick out even more?

 

I never ran the Fikses on the GT3 - bought them in the late fall after my last event, and since sold car and Fikses. But I can say the Fikses were built with correct offsets for the NB Porsche and I had photos of the Fikses from their previous owner on his GT3 - looked fine.

There was a HUGE difference in appearance and stance between the WB built wheels I tried and the NB wheels I own and ran on the GT3. The WB stuck out past the wheel well by about 1/2".

 

Kaz has some pictures of 51mm offset OEM rims on his NB in this thread:
https://www.6speedonline.com/forums/...it-my-c2s.html
The pictures are a bit dark, but maybe he has some others he can send you.

 

That could because Turbo wheels have three different offsets for NB, C4 and Turbo, as follows:

For NB:
Front 8J ET57
Rear 11J ET67

For C4 or C4S:
Front 8J ET57
Rear 11J ET51

Turbo:
Front 8.5J ET56
Rear 11J ET51

 

I think you would be OK running a et51 offset on the rear of a NB 997. I run a et 55 offset with no problems and still have room. Others run stock et67 offset with 15mm spacers and have no problems.

As RonCT stated, no need for an alignment. You are not changing steering geometry with wider wheels.

 

Sure wish there was more clarity on this.....I come from 993 & 996TTs and am finding 997s a tad more challenging to understand.....but this I think I know.

**whether its Turbos, C.Classics, C.Sport Design, or new C.SIIs....all of these 19s have the same front offset of 57. No distinction for "NB" on any of these...WB, NB same.

**Many people do add 7mm to the front of any of the above for looks.... so then we're at ET50.....again no NB-WB destinction.

**Apparently Porsche makes rear wheels for all of the above in 2 different offset ?? ...... ET67 for C2NB.....and ET51 for C4WB

**And then....many people add 15mm to their C4 ET51s so their final offsets is 36 (SII would be 37 since they come as ET51s).

**Since Porsche is pretty much consistant in getting offsets wrong (IMHO)....if the the normal C4 wheel s/be 15mm lower offset (by my eye)....kinda makes sence that the 67mm offset on the C2 should really be ballpark 51-52....semi-crazy logic.

Did I loose everyone?....please let me know where I'm off so far getting this down.

Footnote should read......yep I know the old Carrera Sports actually were the same wheel for C2 & C4 (C4s just shipped from AG with 17mm spacers).
Other footnote.......all wheels I've mentioned are 8J and 11J.....change that & we change offset.....yes Turbo are 8.5, and Carrera Sports 8.5 & 11.5).

 

So does this mean that my car will look like a retarded buggy on the rear ?

 

I don't want to be responsible for saying yes or know.

Would you really spend $3-5K on what someone says here, without understanding it yourself?

OK....asking for pics is your best bet, keep asking.....just make sure the pics show what you need to see (same wheel width, same offset, same car).

 

I dont think so, this pic is a narrow body with turbo offset rears.

Pic is not my car so thanks to whoever posted it (i actually save this stuff)

Note that if your car is stock ride height the tires will appear more prononouce since they are not as hidden by the fenders. Also, when the car is lowered more negative camber is induced which tilts the tops of the wheels inboard thus hiding more of the tire.

 

GreggT: One minor correction/addition to your synopsis. The 8.5" front Carrera Sport wheels have a 55mm offset. So compared to a regular 8"/57mm wheel they stick out 2mm plus 1/4" (half the extra rim width) = approx. 8mm further. Thus they would look the same as a standard 8"/57mm wheel with 7mm spacer added. I agree with your recommendation that people spending a lot of money on rims need to be sure what will work. If a person is not sure, I suggest getting a safe offset rim, then adding spacers if necessary to reduce offset. If you purchase a rim with too little offset, you have no way of adding offset.

 

There are only two body types for the 997: NB and WB.

Use the GT2/GT3 RS as a guideline for WB and the GT3 as a guideline for NB.

11" ET51 and 12" ET51 fir the narrow body, but you're limited to 305 tires. Don't try 315 or wider unless you want to roll the fenders.

The NB 997 GT3 uses a 68mm offset plus a 5mm spacer at the back, it's really a 63mm offset. The GT2 and RS use a 51mm plus the 5mm spacer, becoming a 46 offset.

The typical tolerance is +/- 1/4". I try to stay close to the stock offsets with my custom wheels, as to avoid long term damage to the hubs. However, with the 996/997, both the NB and WB use the same wheel carriers, so running a WB wheel on a NB car won't affect the hubs, it's more a function of fitting the wheel under the fender.

I tried my BBS 12" ET51 wheel on a 997S rear and it works.

When you get to ET45 wheels, then the widest tire you can fit is a 295 on a NB car.

 

I am running ET51 LM's on my 997S with a 15mm spacer.... the spacer is too much and I will be taking them off when I lower the car. The ET51 wheels do not stick out though.

Here is a pick with the spacers

 

JEllis, you should not be using a 15mm spacer, as the hubs are design to handle the offset 51 +5mm (46) down to 68 per Porsche stock fitments

You're running offset 36, a little too much.