Whats going on guys, I'm really tired of creating "do these wheels fit" threads, can some one please explain the correlation of the a rims diameter, width, and offset to me. Every time I search HT, I only find "fitment" threads. I also found this
http://www.preludezone.com/showthread.php?t=170

I'm planning on buying Bronze Rota Circuit 10's that are 17 x 7.5, +45. What tire size do you guys suggest for these wheels so they can fit and not rub.
I want the wheels to sit as close to the fenders as possible without rubbing or scraping the wheel. I'm after a flush look.

I will be lowering my car about 2 inches all the way around on coil-overs.

 

with those wheels 215/45/17, but i dont think these will sit flush though with that offset might need to run a spacer

 

Offset = how far from center the mounting surface on the inside of the wheel sits.

Play around with the following link and see what you get:

http://www.bigcustomwheels.com/rt_specs.jsp

 

so with an offset of +48 is that better or worse ?

 

lower offset sticks the wheel farther out

0 offset puts the wheels mating surface to the hub in the center of the wheel.

generally you get 42 offset in aftermarket wheels, offset too low and you'll probably rub fenders, offset too high and you'll probably hit the spindle, especially if you're lowered.

clear as mud?

lower the number, the farther out it sits
higher the number, the further in the car it sits

check out www.edgeracing.com and see what recommended for your car

 

Here are the rim width and offset recommendations for Preludes

4th & 5th Gen. Stock = 6.5" Wide Wheel w/ +55mm
3rd Generation Stock = 5.5" Wide Wheel w/ +45mm


6.5" Wide Wheels w/ 4th & 5th Gen.

Less than +38mm ::: You take the chance of rubbing the outside lip of the wheel well.
+38mm to +55mm ::: You shouldn't have any problems. Recommended Offsets for 6.5" Wide Wheels.
Larger than +55mm ::: You take the chance of rubbing the inside lining of the wheel well.


7" Wide Wheels w/ 4th & 5th Gen.

Less than +38mm ::: Not Recommended
+38mm to +41mm ::: Not Recommended if you are, or plan to be, lowered. You take the chance of rubbing the outside lip of the wheel well.
+42mm to +44mm ::: This is a grey area if you are lowered, results vary depending on tire and/or drop. You take the chance of rubbing the outside lip of the wheel well.
+45mm to +50mm ::: You shouldn't have any problems. Recommended Offsets for 7" Wide Wheels.
Larger than +51mm ::: Not Recommended. You take the chance of rubbing the inside lining of the wheel well.


7.5" Wide Wheels w/ 4th & 5th Gen.

Less than +40mm ::: Not Recommended
+40mm to +43mm ::: Not Recommended if you are, or plan to be, lowered. You take the chance of rubbing the outside lip of the wheel well. Wouldn't recommend using any tire with an overall diameter larger than stock and/or with a tire width larger than 215.
+44mm to +47mm ::: This is a grey area if you are lowered, results vary depending on tire and/or drop. You take the chance of rubbing the outside lip of the wheel well. Wouldn't recommend using a tire with an overall diameter more than slightly larger than stock, you chances of rubbing increase.
+48mm to +52mm ::: You shouldn't have any problems. Recommended Offsets for 7.5" Wide Wheels.
Larger than +53mm ::: Not Recommended. You take the chance of rubbing the inside lining of the wheel well.


8" Wide Wheels w/ 4th & 5th Gen.
Not recommended without enlarging or rolling outside lip of wheel wells. Some people have had success with running offsets larger than +48mm, but you are taking a risk.


Stock Lug Pattern
5th Generation ::: 5x114.3
4th Generation ::: 4x114.3
3rd Generation ::: 4x100

 

http://www.bayareaprelude.com/forums...ic.php?t=22431

Here's some pics of my car with 17x8, 48 offset and 215/45/17 tires. it's lowered a little over 2"

 

no rubbing??!?

 

hey if it helps im running 17x7.5 with a 45 offset. im moderatly dropped i ve never rubbed. ur a-ok with those specs