Tire Size Question

[BlueBeast]

Hey... to all you out there.... I'm in the final stage of selecting a set of tires and need some input/data on size. I'm putting the tires on my '02 SS on 17x9" rims. I know that the recommended max width on the 9" rim is the stock tire size (275/40/17). Has anybody had any experience with putting 285/40/17's on 9" rims instead of the recommended minimum of 9.5" rims? I believe there is plenty of clearance on the car just not sure if there is a tire to rim fit/seal problem with the wider tire. Any info would be appreciated........thanks

[coprunr]

i have seen 315/35/17's mounted on the stock SS wheels. they don't fit well , but they do fit. you should have no problem mounting a 285 in place of a 275.

[Camaro6662]

Camaro & Firebird Fitments
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Bolt Pattern

5 x 4.75" or 5 x 120.65 mm

The numbers in the columns are as follows:

WIDTH ..... OFFSET ......... WIDTH OF TIRE

Front and Rear

7.0" ..... +35 to +40 mm .... 215, 225, 235
7.5" ..... +35 to +45 mm .... 215, 225, 235
8.0" ..... +38 to +55 mm .... 225, 235, 245
8.5" ..... +38 to +45 mm .... 235, 245, 255
9.0" ..... +38 to +56 mm .... 255, 265, 275
9.5" ..... +38 to +56 mm .... 255, 265, 275
10.0" ... +38 to +48 mm .... 265, 275

REAR Only

10.0" ... +38 to +54 mm .... 275, 285
10.5" ... +38 to +50 mm .... 285, 295
11.0" ... +45 to +56 mm .... 315

Z06 Corvette Replicas:

17"x9.5" +50 to +56 mm no problems. 275/40R17.

18"x9.5" +50 to +56 mm 275/35R18 or 285/35R18.

18"x10.5" +50 to +53 mm. Higher than 53 mm will require the BFH mod. 285/35R18s thru 315/30R18. Over 295 may require rolling the fenderlip and will need the BFH.

Y2k Corvette Replicas:

17"x8.5" +56 mm

17"x9.5" +50 to +56 mm

18"x9.5" +50 to +56 mm

17"x11" Wheels

ZR-1 Style for Camaro +50 mm (Known as Grand Sport offset)
ZR-1 Style fo Firebird +36 or +50 mm The wheel well on the "bird" is a little wider.

American Racing TT-2's +45 mm

With 17"x11"s there is always a possibility of needing the BFH and/or fender rolling mods with 315s. If lowered, an Adjustable Panhard Bar becomes a virtual necessity. Some have used the +38 offsets with an 11" wheel but it does stick outside the fender and is definitly not recommended on lowered vehicles. +50 and +56 are the two most common. +50 is the better fit (for the ZR-1 replica).

For road race only applications a 17"x11" at all four corners can be made to fit.

Pontiac GTO Fitments
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Bolt Pattern

5 x 120 mm

+48mm is the stock offset. (Same as most wheels for BMW's and many Audi and other euro cars.)

WIDTH ......... OFFSET ........... WIDTH OF TIRE

Front and Rear

7.0" ............ +26 to +65 ........ 215, 225, 235
7.5" ............ +33 to +61 ........ 215, 225, 235, 245
8.0" ............ +39 to +55 ........ 225, 235, 245
8.5" ............ +45 to +48 ........ 235, 245, 255

REAR Only!
8.0" ............ +36 to +65 ........ 245, 255
8.5" ............ +42 to+65 ......... 245, 255
9.0" ............ +48 to +65 ........ 255, 265, 275
9.5" ............ +55 to +64 ........ 265, 275, 285

OFFSETS GREATER THAN SHOWN ABOVE WILL RUB ON REAR
FENDER LIP. (25MM FENDER LIP)

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For wheel size help, this chart will tell you roughly what fits with the least modification. It is not exactly flawless since some wheels and tires are not exact fit like one would expect.

* BFH = Big F'king Hammer (FYI)

[DC2250]

i run 295x17x40 on my 9.5 rims..........doesnt rub and didn't have to beat anything .

[Flawless]

285s are safe on a 9'' wheel. 315s on a stock wheel are a def No, NO !!!!