Sponsored by The Tire Rack

[avengeme]

Right now my car has runflats on it and I want to replace them with non runflats. The car has 225/40/17's all around right now.

My first question is are there any advantages/disadvantages to running 225s up front and 255's in the back as recommended?

My second question is will switching to 18's help to fill up my wheel gap at all?

Will I need to add/remove spacers if going from my current setup to say 225s up front and 255s in the back or 235s all around?

Should I drop the car before or after I get the wheels and tires? Will the drop have any effect on what wheels/tires I should get besides not getting 20's that wouldnt fit or something like that?

Sorry for all the questions, I'm a complete noob.

[MassBimmer]

Changing the size of your wheels from 17's to 18's won't have any impact on your fender gap. Is your current setup staggered or are the wheels the same width all around? I would hold off on spacers until you decide whether or not you're going to upgrade your wheels. Dropping your car will dictate what size and offset your new wheels can be. You need to stay within a certain tolerance to avoid the tires rubbing the inner wheel well.

[avengeme]

Originally Posted by MassBimmer

Changing the size of your wheels from 17's to 18's won't have any impact on your fender gap. Is your current setup staggered or are the wheels the same width all around? I would hold off on spacers until you decide whether or not you're going to upgrade your wheels. Dropping your car will dictate what size and offset your new wheels can be. You need to stay within a certain tolerance to avoid the tires rubbing the inner wheel well.

Ok thanks alot bro and yes they all appear to be the same exact tire so I'm guessing theyre all the same width. Cant find any difference between the sizes written on the front and rear tires.

[wuchao1]

I would drop the car first then change wheels/tires.. And for spacers you dont really need them if the wheel you buy has the offset you want.
And 225 front and 255 rear is what I think "balanced" set up because in my experience any size bigger/wider than that will really decrease your MPG...
My stock/winter setup is 205/55/16 and summer setup is 235 front 265 rear on 18" wheels.. Highway, cruse control at 75mph: winter set up I can get up to 28MPG but with wider tires I average 20-22MPG on summer setup....

[avengeme]

Originally Posted by wuchao1

I would drop the car first then change wheels/tires.. And for spacers you dont really need them if the wheel you buy has the offset you want.
And 225 front and 255 rear is what I think "balanced" set up because in my experience any size bigger/wider than that will really decrease your MPG...
My stock/winter setup is 205/55/16 and summer setup is 235 front 265 rear on 18" wheels.. Highway, cruse control at 75mph: winter set up I can get up to 28MPG but with wider tires I average 20-22MPG on summer setup....

Ahh I see, I am enjoying the 26mpg, especially coming from a mustang that got 15mpg. I guess I'd just go with the 225 up front and 255's in the rear. The tires I'm looking at are about 5lbs lighter a piece than the runflats so I'm hoping that'll help with the mpg as well.