Ok guys need some help here. Gonna be getting a set of 325/65/18 FireStone Destination M/T for my truck soon and I'm gonna be getting some KMC 18in addicts for my truck. The addicts come in a 18x9 with a -12 or +18 offset. So I need a lil help. With these tires which offset do i need? With these big tires I dont want them back in to far. Also In PA your tires cant stick out past your fenders to pass inspection. But I'm inspected till 12/12 so im all good if they stick out maybe a inch or a lil more no big deal cuz i got time to get fender flares if i have to. So i need your help with to offset which should I get?
Thanks Ron

 

You have to go with the offset that moves the tires outside the fenders because moving them in will rub on more things then just the bumper.

 

So the +18?

 

Talk to the tire installer or where you are going to buy your tires and wheels.....maybe they could shed some light on the situation.

Ken

2008 F150 FX4

 

I'm gonna buy the rims online and tires local...

 

I put your info into tirerack.com and the KMC Addict 18x9 recomended for your truck has -12mm offset. I think that is with close to stock size tires. You may need something different with the larger tires.

 

I know +18 will stick out just a little as I have +18 offset on my Monsters. -12 most likely won't stick out, but I am not sure how close to stock that is.

 

God im so damn confused...

 

If you don't mind it sitcking out, go with the +18s. The will give the truck a really good lucking stance in my opinion. If you don't want to for inspection purposes then the -12 offsets may be better for you, but I am not familiar with them. Take a look at these two pictures, they may help explain it a little better. Notice the one on the left has a much smaller offset than the right one: Custom rims, wheel tire packages for your ride - RIMSnTIRES.com

EDIT - I actualy believe I am dead wrong on the negative offset. The negative will actually make the tires stick out much further. Lol, I think we are both learning here. It looks like positive and negative offset is much more than how far they will stick out. Here is one more quote I found off another site:
One more link for reference: http://www.f150forum.com/f6/help-offset-wheels-41360/

 

Lol im so clueless with this stuff!! So bottom line how far out will the -12 stick out and how far will the +18 stick out? And will eitjer of them rub? With the 325/65/18 tires?

 

Sadly that is not something I can completely answer. I know my setup stick out about 1 to 1.5" from the fender. That could vary by tire and rim, but again, not sure. The guy with the -12 offsets in that last link has his tires stick out really far. Obviously much further than an inch or two.

 

Well hey man i appriciateyourhelp. And if the -12 sticks way out im going with the +18

 

Boy in that link that guy claims - offset is what makes it stick further outside the fenders. I am not sure on that it looks more like he has some wheel spacers but I am not entirely sure. I would hit up a local wheel shop and ask.

 

Im gonna calll KMC today and see whattheysay.

 

Wheels are always confusing so calling the dealer or manufacturer is a good idea.