I am needing help picking out tire sizes for wheels that are going to be 18x8 (+45 offset) in rear and 17x7(+40 offset) in front. Avoiding rubbing the fender is my number one priority. The wheels I am purchasing are the Konig Zero-in Matte Black with Machine Face and Red Undercut models. From what I gather from the Tire Size sticky, I should be using 245 or 235 in rear with 205 in front. What percent should I use to avoid rubbing? I haven't ordered the wheels yet, I am debating between going unstaggered with 18x8 all the way around or staggered with the 17x7 front and 18x8 rear. I think the staggered would look better and perform better based on what I have read.

I appreciate any help! Thanks!

 

I would stick with same sized rims if I were you to maintain leveling. Otherwise, you're going to have a slight tilt forward.

 

Don't go with a 205, do you want the car to perform worse? The wheels are probably fairly heavy too. But if you do go with those, go with 215/45/17 and 245/35/18.

 

I just realized Konig Zero-in does offer 18x9.5(+45) for rear and 18x8(+45) for front. Would this be a better combination? If so, what tires should I go with on these?

 

You will need to roll your fenders but this would be a much better size. Actually you should roll your fenders no matter what so you can put some meaty, proper sized tires on. BUT if you are going to go with those sizes, you may as well go with the Konig Milligram. It is made with flow formed technology so it is a lot lighter and should be stronger. 18x8.5 +45 and 18x9.5 +45.

 

Those wheels look real similiar. I will check into those as well. To roll my fenders, what will I need to do? I am a noob at this stuff. How much cost am I looking at for rolling my fenders? Do I need to just do my front ones or front and rear?

 

Where abouts do you live? You can usually find someone in your local forum who has done them before. I think I paid $100 for mine. It involves taking the wheels off and attaching a fender rolling tool, heating up the fenders with a heat gun, and then rolling them. In the rear, you also need to relocate your bumper tab. I cannot explain this very well but someone familiar should be able to do it.

However I think these wheels only have 18x8.5 +45 and 18x9.5+35. So they are not the easiest to fit. It is possible, but you will have to either roll the fenders fairly aggressively or run skinny tire sizes. For instance, if you rolled the fenders you could run a 225 tire front and 245 tire rear. Personally, if you don't want to do much fender work I would stay with a higher offset wheel. Once you get below 50 it makes it really hard to avoid rubbing.

 

Not true per se. Just get tires that have the same OD.

OP, I'd do a 245/35/18 rear tire, and 215/45/17 front tire. That will give you the same overall diameter front and back. This will, however, cause the front tires to appear "thicker" than the rear ones. If I were doing a staggered height, this is what I'd do though.

I'd still get the fenders rolled though. Try posting in the regional threads that are closest to where to live, and trying to find someone who does the rolling locally. You might ask for others to vouch for these people as well.

 

FYI I don't think it's been mentioned, but tires are A LOT more in 18" size. I thought about getting 18's, and then I saw that a Star Spec in 265/35/18 is $100 MORE than a 265/40/17...if you burn through tires fairly quickly this starts to add up.

 

With those offsets you could have rubbing even with the 245/35R18 on the rear. You may have to run more negative camber or roll the fender lips. The best tire sizes would be 215/45R17 and the 245/35R18 for the most clearance.
If I can help with the tires let me know.