03 Cobra Wheels

**Andyman** · 10-19-2011, 01:36 PM

Guys my be a silly question but here goes.

03 Cobras came with 17"x9"

Now I have just measured my wheels width and they are just over 10" wide, front and rear the same

The tyres are 245 45 17, so is the 9" width a inside measurement

or are my wheels wider then standard

**yuke175** · 10-19-2011, 03:05 PM

no way a 245 is on a 10 inch wheel must be a certain way to measure

**ToplessPony94** · 10-19-2011, 04:06 PM

My supposedly 17x9 95 Cobra R wheels measure ten if you measure that way, too. Must be an inside measurement or something.

**TorchRedSVT** · 10-19-2011, 04:45 PM

stock sized tires on our cars are 275/40/17, stock size wheel is 17x9. check the wheel and see if you can find any Ford OEM stampings....that will let you know for sure

proper way to measure a wheel is from the inside, not from the outside.

hope that helps

**SVT10th** · 10-20-2011, 01:42 PM

Andyman, your car must be a handfull to pull away from a stop and not spin the tires with only 245s on it. Those are Mustang GT size tires (or is it "tyres"?). Like Ian said, stock is 275 -- and a lot of people put 315/35-17 Nitto drag radials on the back to keep the rears from spinning as much. (Nitto will fit on the stock rim, other brands not so easily)

But yes, the 9 inch measurement is the inside bead.

**Andyman** · 10-20-2011, 02:57 PM

Originally Posted by SVT10th

Andyman, your car must be a handfull to pull away from a stop and not spin the tires with only 245s on it. Those are Mustang GT size tires (or is it "tyres"?). Like Ian said, stock is 275 -- and a lot of people put 315/35-17 Nitto drag radials on the back to keep the rears from spinning as much. (Nitto will fit on the stock rim, other brands not so easily)

But yes, the 9 inch measurement is the inside bead.

And I thought they were already quite wide

at the moment Im looking at replacing the all 4 wheels or my just getting 2 10.5" wide rears and some new rubber

**TorchRedSVT** · 10-21-2011, 08:51 AM

yeah, those are definitly small looking.........

good plan with the 10.5's....you'll love the look and the additional tracking

**Mustang5L5** · 10-24-2011, 01:54 PM

You are measuring them incorrectly. The outer bead lip is 1/2" and is not counted in the measurement.

You really measure from the inside of the lips with the tire removed. I have a wheel sans tires at home, i can post some pics later, but pretty sure you have a 9" wide wheel

You should also have 275/40/17's on there

**Andyman** · 10-24-2011, 05:33 PM

Thanks for the updates, we are putting some Eibach pro springs on it this weekend

does anyone here run these springs with 10.5 wide rears??

is there any tyre rubbing at all??