PLEASE HELP! 15x8 wheels

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Originally Posted by Black Yaris

Tire Nazi here to save the day!
if you want to run an 8 in wide you want +38 offset that will set your wheel dead flush with your fender and will cause no rubbing on the inside wheel well. I would suggest a 225/50R15 tire, as it would keep the overall diameter if the tire very close to stock.

do not run the +45 as Peterredyaris said or you will be rubbing all the time, I can see why he had such bad rubbing problems running that offset on that width

You should be fine with 8 in wide wheels, because I am running a 8.9 inch wide tire (225/50R15) on a wheel with a +38 offset and they set as described above, it will work

You recommend +38 for everything. Stop making reccomendations based on your setup. You obvoiusly have 0 experience with lowered Yarii and have NO IDEA how offset dynamically changes with wheel width. +38 on an 8 inch wheel will rub the outer fender horribly if he lowers the car more than an inch or so. It will stick out 15mm more than a 7 inch wheel with a 40mm offset which is nearly flush.

Here is a simple offset calculator. See for yourself.

http://1010tires.com/WheelOffsetCalculator.asp

You previously said that a 7 inch wheel with +38 is perfectly flush. which it is, but it will rub on the outer front if you are lowered. So by your account now both +38 on a 7 inch wide wheel and +38 on an 8 inch wide wheel will be perfectly flush? NO. the 8 inch wheel will STICK OUT 13 MM beyond the fender of the 7 inch wheel.

Addtionally there will be 13 mm LESS clearance on the inside. To put that into perspective, that would be the equivelent of running a + 51 7 inch wheel which MAY rub on the inside. I dont know that for sure.

So if he lowered the car he would probably rub on both the inside AND outside of the fender based on your recommendation.

To the original poster:

If you are not lowered at all and dont plan to you will probably need an offset in the mid to low 30s to run 8s. If you plan to lower the car Black yaris has no idea what he is talking about regarding this topic, and you may need really low profile tires to keep from rubbing the outer fenders, and the wheels will stick out.

You could probably get 8s in the back and get it looking pretty good and nearly flush or flush, but to get that look in the front you will probably have to go with a narrower front with a different offset.