Couple Of Tyre Questions

[JMF]

Any idea if 295/50/15's will fit on the rear of my Charger, see below pic, I want to fill the arches more, currently have 255/60/15

The wheels are 15 x 8 on the rear

Also with the aspect ration being 50 instead of 60 will the car sit lower at the rear ?

[tan top]

 what back space are the rear wheels ?

[JMF]

3-3/4" I believe

They are American Racing Outlaw 1's

[68 RT]

I had 295/50/15 on my 68 on wheels with 4.5 backspace. Fit fine.

[moparguy01]

keep in mind a 295/50 will fill the wheel wells better side to side, but its a very short tire.

[JMF]

Yeah I don't really want to go any lower at the rear, would spacers be a better option ?

[XH29N0G]

255/60/15 is ~27.0" dia
295/50/15 is ~26.6" dia (similar to 245/60/15)
It won't be that much different from the 255's.

275/60/15 are about 28.0" dia

[JMF]

So if i'm understanding it correct with 275's the car will sit slightly higher at the rear?

[XH29N0G]

Slightly higher.  The pictures have 275 60 rear and 245 60 front on 15 in rims.  Rears are 15 x 8, front are 15 x 7.  There are plenty of other pictures on the wheel sizes thread that you can check for size and stance.

[Ghoste]

And remember when thinking about it in terms of car height, that one inch larger diameter will be split in half because the car is supported at the center.

[JMF]

Ok thanks, can someone explain why a 275/60/15 would be higher than a 255/60/15 though when it's only the width that is the difference between the two ?

[Ghoste]

The "60" is a ratio indicating 60% and it is sidewall height to tread width that the ratio compares.

[XH29N0G]

The "60" is a ratio indicating 60% and it is sidewall height to tread width that the ratio compares.

I was also writing.... and will leave it in case you are interested.

The 255 or 275 is the width in millimeters.  

The diameter  of the wheel is the rim diameter + the tire height *2.  

For a 255/60, the tire height is 60/100 * 255 mm/25.4 mm/inch = 6.0 inches
For a 275/60 the tire height is 60% of 275 mm/25.4mm/inch = 6.5 inches

15 + 6 *2 = 27 inches
15 + 6.5 * 2 = 28 inches

[tan top]

295 tire on a 8x15 wheel & 3 & 3/4 back space  , is too much will be rubbing or cutting or close to the quarter lip on suspension compression IOM
might be able to get away with a 275  , although with that back space  is pushing it to be safe IMO ,
think ive still got mesurements written down , when I went through all this with  perceys wheel rite thingy 3 or 4   plus years ago on mine  ,  I had a idea of getting a set of the same wheels ,  will have a look