I am sending my oe19s (fronts) to weldcraft to get the widened and I'm wondering if I should do + 2 or 2.5". I am dropped on z s techs and have 20/25 mm spacers. I am moving my rears up front and vice versa. Should I do 10 or 10.5? What would be a good tire size for either set up

thanks in advance

 

If you are moving the 8.5's to the front, then I would just go 10". The widest you can in the front is a 255, so the widest you should go on the rear is 285. Any more stagger than that isn't optimal for handling. There is no point in going to a 10.5 because a 10" wheel holds a 285 just fine, and you will be adding less overall weight to the car

 

well, im planning on keeping the OE 245/40 set-up for the "fronts", so 285/35s would be pretty good?

 

do not run the 245/40/19 in the front, it is too tall.

 

you need a 35 series tire up front

 

too tall for looks or fitment? i have almost brand new set of rears and really dont want to buy unless they wouldnt fit

 

Fitment - since you are dropped and have spacers they will rub. Try it first before doing anything.

 

quick suggestion.

8.5 up front 245/35 25mm spacer - sell your 245/40 tires

275/35 9.0/9.5 inch width with 20mm spacers

 

so i went ahead and test fitted the 245/40s up front witht he 20mm spaceres and wow... its close but they fit (about .5" clearance)

sorry for iphone pics

 

it will fit, but the issue would be VDC issues. your 40 wall might be to tall for your rear wall. 30/35 series wall.

 

Yeah you are definitely going to want a 285/35 tire on the rear if you are going with a 245/40 up front. I think a rule of them is to keep the sidewall heights the same or at a delta of 5. I have 35 up front and 30 in the rears and its not causing me any issue...both tire sizes are supposed to be 26" OD on mine, but I have a slight stretch in the front so its realistically probably a little shorter than specs.