Offset for the Widest tire?
Offset for the Widest tire?
Hate to ask yet another offset question, but after searching and reading for 2 hours I feel like I know enough to ask a good question. I asked the shop but their recommendations will not net the look I am looking for and when I tell them about the look I want then they tell me they don't know.
2005 G35 6MT Coupe lowered with Tein High Techs
I am considering 19" 9.5 and 10.5 Volk GTS or 20" 9.5 and 10.5 Work VS-XX.
I would like the widest tires I can get without rubbing on the inside, I don't like the stretched tire look and I would like the wheels to be a little tucked, but not as much as the OEM 19". I don't mind rolling or cutting the fenders.
I measured the stock 19" wheels and they are tucked approximately 19mm in the front and 32mm in the rear. I measured using a straight edge on the fender and a measure stick on the top of the wheel (not the tire).
According to this calculator if I want the wheels to tuck I need to +37 on both front and rear and if I want them almost even with the fender then I need +30 in the front and +28 in the rear.
The stock tires circumference is 82.0 (F) and 83.9 (R).
In order to get the square look on the tires I want Michelin SP2 265/35/19 (F) and 295/30/19 (R). (275/35 are .8 mm farther from the stock circumference)
Or if I buy 20" wheels then P-Zero 275/30/20 (F) and 305/25/20 (R).
Does all this make sense or have I completely off?
Will either of these combinations work? What would be better for the look I want?
2005 G35 6MT Coupe lowered with Tein High Techs
I am considering 19" 9.5 and 10.5 Volk GTS or 20" 9.5 and 10.5 Work VS-XX.
I would like the widest tires I can get without rubbing on the inside, I don't like the stretched tire look and I would like the wheels to be a little tucked, but not as much as the OEM 19". I don't mind rolling or cutting the fenders.
I measured the stock 19" wheels and they are tucked approximately 19mm in the front and 32mm in the rear. I measured using a straight edge on the fender and a measure stick on the top of the wheel (not the tire).
According to this calculator if I want the wheels to tuck I need to +37 on both front and rear and if I want them almost even with the fender then I need +30 in the front and +28 in the rear.
The stock tires circumference is 82.0 (F) and 83.9 (R).
In order to get the square look on the tires I want Michelin SP2 265/35/19 (F) and 295/30/19 (R). (275/35 are .8 mm farther from the stock circumference)
Or if I buy 20" wheels then P-Zero 275/30/20 (F) and 305/25/20 (R).
Does all this make sense or have I completely off?
Will either of these combinations work? What would be better for the look I want?
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6MT Coupe
If you go with 20's and like some rim protection from curbing with your tire sidewall this is my set up.
Front: 8.5X20 20os 245/35's. No rubbing with drop.
Rear: 10X20 25os 285/30's. You will rub with this rear set-up if you drop her.
Front: 8.5X20 20os 245/35's. No rubbing with drop.
Rear: 10X20 25os 285/30's. You will rub with this rear set-up if you drop her.
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From: PNW in Washington
6MT Coupe
^^^ Will rub the fender.
I have approx .75" - 1" drop in back and rub only when cornering hard or going over big dips. I need to roll my fenders or try a click up on my Cusco rear dampeners.
Fronts are dropped about 1.5" with no issues on my 245/35's.
Tein H-Techs is a slight drop, so you might not rub.
285/30's are meaty. If I went with less meat and more stretched tire, might not rub at all.
I have approx .75" - 1" drop in back and rub only when cornering hard or going over big dips. I need to roll my fenders or try a click up on my Cusco rear dampeners.
Fronts are dropped about 1.5" with no issues on my 245/35's.
Tein H-Techs is a slight drop, so you might not rub.
285/30's are meaty. If I went with less meat and more stretched tire, might not rub at all.
Originally Posted by bjdraw
Do you have a picture? How far past the fenders do the wheel stick out, if at all?
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iTrader: (10)
Joined: Jul 2006
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Likes: 7
From: PNW in Washington
6MT Coupe
Here's a real cool tire size and off-set calculator you can play with.
http://www.rims-n-tires.com/rt_specs.jsp
http://www.rims-n-tires.com/rt_specs.jsp
I ended up with Maya MRS with a silver and black finish.
20x9 +30 Front w/ 255/30ZR20
20x10.5 +29 Rear 305/25ZR20
Continental ContiSportContact 3

The wheels stick out a little, but you don't notice unless you really look for it.
A +32 would have probably been perfect, but might have rubbed on the inside. I haven't rolled the fender yet, but in the past 100 miles they did rub once on an on ramp driving aggresivly and I hit a bump at the same time.


I can't say enough great things about wheelautohaus aka Charles at RZ Motoring. Once he understood what look I wanted he did a great job of helping me with the fitment and finding a wheel I liked.
20x9 +30 Front w/ 255/30ZR20
20x10.5 +29 Rear 305/25ZR20
Continental ContiSportContact 3

The wheels stick out a little, but you don't notice unless you really look for it.
A +32 would have probably been perfect, but might have rubbed on the inside. I haven't rolled the fender yet, but in the past 100 miles they did rub once on an on ramp driving aggresivly and I hit a bump at the same time.


I can't say enough great things about wheelautohaus aka Charles at RZ Motoring. Once he understood what look I wanted he did a great job of helping me with the fitment and finding a wheel I liked.
Last edited by bjdraw; Aug 16, 2007 at 01:39 PM.
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