Hi guys, I've been reading some posts about wheel offset and I'd like ask something nobody's ever asked.... Let's say I have a 7½ inches wide rim, 55mm offset with a 215 tires (exactly like stock except for wider rim). The side of the tire would still be at the same place right ? (now concentrate !!) Soooo, does that mean that an 8 inches wide rim with 45mm offset and a 235 tire is not worst (rubbing wise) than a 7inches wide rim with 45mm offset and 235 tire (even if it is not possible)? What I'm saying is the rim will never rub on the fender , it's the tire width and rim offset that matters most with rubbing issues......

AM I RIGHT ???????


By the way what do you think about these. I like the "agressive" spoke:

http://www.discounttire.com/dtc/find...ZDINT&pc=57477

I'm currently looking for a set of wheels for my 235/40/18 P Zero Nero. Problem is: offset 40mm + H&R sport drop = ???

 

i dunno shit about that but those rims are HOT...

 

You are probably half right here. What matters most is rim size (diameter AND width) and offset. In fact, every component of the wheel and tire size matters to some extent, but overall rim size and offset matter most.

For example, the difference between having a 235 tire on a 18 inch or a 19 inch rim is much bigger than the difference between having a 225 or 235 tire on there. Am I explaining this well enough? The point is that rim diameter has a much larger effect on how close the wheel setup will come to the inside of the wheel well than the width of the tire alone.

Another example... if you have a rim that is 18x8, the offset you choose will have a much bigger impact. In other words, choosing between a +40mm offset and a +50mm offset will have a much bigger impact on rubbing issues than choosing between a 225 tire and a 235 tire (even though the difference in both cases is 10mm).

Now... to answer you first question about the difference between having a 235 tire on a 8 inch wide rim or a 7 inch wide rim.... it's not the same. Tires are made of rubber, and squeezing a 235 tire onto a 7 inch wide rim causes the tire sidewall to have to roll a little bit to fit, at least moreso than on and 8 inch wide rim. Meaning that the tire won't exactly be 235mm wide once you put it on the 7 inch wide rim. Whereas on an 8 inch wide rim, the tire will sit closer to the way it was before it was put on the rim in the first place. For reference, 235mm = roughly 9.25 inches, now imagine the difference in what happens to a tire when you squeeze the sidewalls a half inch further on each side. Granted the difference is not a big one, but it does not stay the same regardless of the width of the rim.

Clear as mud???



Rims look pretty hot, not sure about the quality though. not saying they're questionable, I am just not familiar with them.

And I'm pretty sure that an H&R Sport drop with 18's and a 40mm offset will rub.

 

I'm just hoping somebody will tell me "I have the exact same setup: rim width, offset, tires and I don't rub AT ALL" so I can run and buy'em ....

 

I'm right in theory, but not in practice....because of the deformation of the tire depending on the rim width.

But when you say that a 225 tire vs a 235 gives 10mm of width, you're right but thats 5mm per side, not 10 (like a 50mm offset vs a 40mm offset which push the wheel 10mm towards the outside).

Anyway, I'm sure you already knew that but I just wanted to push this thread to the top !

 

we've taken care of that, click the link, anything with a 50mm offset is perfect for the CL, even the 19" with 235/35/19 tires or the 18" with 235/40/18 tires, you won't rub even with a Slammed ride.

Sizes: 5x114.3
-17”x 7.0” +50mm 64.1 centerbore*
-18”x 7.5” +50mm 64.1 centerbore*
-19”x 7.5” +50mm 64.1 centerbore*
* Hubcentric application
http://ronjonwheels.com/inspyre.html
http://ronjonwheels.com/servo.html

 

"The industry rule of thumb is that for every 1/2" change in rim width, the tire's section width will correspondingly change by approximately 2/10"." A quote from Tire Rack.

http://www.tirerack.com/tires/tirete...#rimwidthrange