: Help with aftermarket rims... offsets/etc



DrVolkl
03-07-12, 06:36 PM
So stock rims are 19x9 and 19x9.5 for the wagon f/r???

I was thinking of running 19x9.5 F/R or 19x9.5 and 19x10.5 f/r. Any issues with either?

If the rims I order only come in a +35mm offset, will I need spacers? (What's stock offset on a wagon f/r?)

I'm trying to get this all sorted out so I can order something, but this car is pretty new to me and I don't know all the specs yet, so any help would be greatly appreciated!

Correct me if I'm wrong, but bolt pattern is 5x120 with a 66.8 center bore.

Low_ET
03-08-12, 07:36 PM
Sedan and Wagon:
Front 19 x 9.0_____51 mm offset _____51.5 lbs
Rear 19 x 9.5_____56 mm offset______55.5 lbs

Front Rotor Clearance: 0.620

Hub Size: 67.1 mm
Stud size 14 mm x 1.5 mm
Bolt Pattern: 5x120 mm

There is at least one Forum member running the factory rear wheel (9.5x19) on the front with widened factory wheels on the rear.

A table of successful wheel/offset/tire combinations can be found here:
http://www.ctsvparts.com/tire-sizes

DrVolkl
03-08-12, 08:48 PM
Sedan and Wagon:
Front 19 x 9.0_____51 mm offset _____51.5 lbs
Rear 19 x 9.5_____56 mm offset______55.5 lbs

Front Rotor Clearance: 0.620”

Hub Size: 67.1 mm
Stud size 14 mm x 1.5 mm
Bolt Pattern: 5x120 mm

There is at least one Forum member running the factory rear wheel (9.5x19) on the front with widened factory wheels on the rear.

A table of successful wheel/offset/tire combinations can be found here:
http://www.ctsvparts.com/tire-sizes

Thanks... fairly useful. I'm wondering if 35mm offset isn't going to be close enough. I don't want the rims to be too far out or in.

DrVolkl
03-09-12, 08:56 PM
After doing the calculations, if I run a 9.5 rim in the front and rear, it'll be sticking out 22mm.... It's not a lot, but it might be enough to rub. Anyone know if I have that kind of room to give up?

BeagleBrains
03-10-12, 10:07 AM
I bought new wheels for our 2011 CTS V Coupe to replace the GM OEM RB9 19" x 9" (48.3 cm x 22.9 cm) front; 19" x 10" (48.3 cm x 25.4 cm) rear
Offset (http://wwwtirerack.com/wheels/tech/techpage.jsp?techid=101): 52mm Bolt Pattern (http://www.tirerack.com/wheels/tech/techpage.jsp?techid=92): 5-120 Rec. Tire Size (http://wwwtirerack.com/tires/SearchTires.jsp?sortCode=57450&width=255/&ratio=40&diameter=19&skipOver=true&minSpeedRating=V): 255/40-19
I used this LINK: Tire Size Calculator (http://www.discounttiredirect.com/direct/brochure/info/tmpInfoTireMath.jsp) for planning and fitment.
The new Lexani Wheels are:


















Front

Size: 20x9
Offset (http://www.tirerack.com/wheels/tech/techpage.jsp?techid=101): 57mm
Bolt Pattern (http://www.tirerack.com/wheels/tech/techpage.jsp?techid=92): 5-120
Rec. Tire Size (http://www.tirerack.com/tires/SearchFrontRearTires.jsp?frontSortCode=59900&rearSortCode=60100&frontWidth=255/&rearWidth=285/&frontRatio=35&rearRatio=30&frontDiameter=20&rearDiameter=20&skipOver=true&minSpeedRating=V): 255/35-20
Weight: 35 pounds
Finish: Black w/Polished Lip
Manufactured in Italy
Optional Rear

Size: 20x10.5
Offset (http://www.tirerack.com/wheels/tech/techpage.jsp?techid=101): 64mm
Bolt Pattern (http://www.tirerack.com/wheels/tech/techpage.jsp?techid=92): 5-120
Rec. Tire Size (http://www.tirerack.com/tires/SearchFrontRearTires.jsp?frontSortCode=59900&rearSortCode=60100&frontWidth=255/&rearWidth=285/&frontRatio=35&rearRatio=30&frontDiameter=20&rearDiameter=20&skipOver=true&minSpeedRating=V): 285/30-20
Weight: 38 pounds
Finish: Black w/Polished Lip
Manufactured in Italy


My final decision drew me to LEXANI CVX-55 in twenty inch black with brushed spokes:
http://www.lexani.com/Custom_Wheels.php Wheels are custom made to fit properly.
Mounted on a Black 2011 CTS V Coupe. It is an aggressive Concave design that works well with the large brake disk/caliper. HUB 70.3 | +40 | 10 SPOKE | BLACK


http://www.wheelsnext.com/images/wheels/large/Lexani_LSS10_MABK_BKLIP_S2426_2.jpg

King335i
03-11-12, 12:14 AM
35 pounds? Ouch.

DrVolkl
03-11-12, 01:37 PM
35 pounds? Ouch.

Stock rims are 50 and 55lbs?! I can't believe it. I'm looking at a nice set of Volks.... coming in at 20lbs. I may have to roll the rear fenders to clear however, I really gotta take some measurements.

thebigjimsho
03-12-12, 11:01 AM
Stock wheels are in the low 20s. I am guessing the 50 is with tires. But, I believe, the Michelins on stock wheels is in the low-mid 40s range...

DrVolkl
03-12-12, 02:54 PM
Stock wheels are in the low 20s. I am guessing the 50 is with tires. But, I believe, the Michelins on stock wheels is in the low-mid 40s range...

Yeah, that would make the stock rims right around 23-25lbs guessing. I'll weigh mine for sure when/if I get this project done.