my_jdm_rx7

Help please!!!! Can I fit a 16x7 with a +29 on the front with 225/50's? and with a 16x8 with a +37 with the same size tire on the back??? Thanks!

Scott 89t2

rear might be ok. you need a 40mm in the front

Turbonut

iTrader: (1)

From what I can see, starting from the stock 16 x 7-40 offset, the front wheels will move out 11mm or .429"
The rear wheels-outside will move 16mm or .624" towards the fender, inner will be 10mm less or .39"
Measure the distance or place a jack under lower control arm, and raise slightly off the ground. Move the wheel out the amount and see if any problems,etc.

Ryde _Or_Die

I thought you wanted like a 35mm in front? Thats what I've always been told for like 8" wide rims.

my_jdm_rx7

So, for the front am I going to need a spacer?? So, is the rule of thumb the wider the wheel the less offset is needed? I am pretty bent on getting these wheels...but if the front 16x7 +29 wont fit...what shall I do?

Turbonut

iTrader: (1)

USE THIS!!!!
http://toy4two.home.mindspring.com/offset.html
As I stated earlier the front wheels will move OUT towards the fender. If you use a spacer, you'll put the wheels/tires into the fenders.

OC_

i hate offsets! whoever invented them should be shot! backspacing is so much ez'er

saltlakebay

Judging by the offset calculator, your golden. You've got plenty of room in the rear for the 8", but they will jut out an extra 16mm which should be fine.

Since the fronts are 7" your should be ok. Since it gives you an extra 11 mm on the inside you may be able to go bigger than 205's in regards to tires. I wonder if 225's would fit on the front then? Might need a spacer?

Feel free to correct me if I'm wrong.

my_jdm_rx7

thanks guys, if Im good to go, then Im getting the wheels! Thanks.

Scott 89t2

his front is 7"

Scott 89t2

I'm pretty sure he will be hitting the fender. you don't have 11mm of space..

stock is 16x7 40mm. I'm running 225 and it's very close to both fender and shock. I wouldn't want to move it either direction.

Ryde _Or_Die

Ya I know, but wouldn't the same offset work with rims that aren't as wide?

Scott 89t2

yep

Scott 89t2

no. if you change the width. you need to change the offset by 1/2 as much as the width change... 1" wider rim. change the offset by 1/2" which is around 15mm I think?

this is why offset sucks as posted above. backspace is much easier.

that's puts the extra inch on one side of the rim. instead of adding 1/2" to each side.

BadBoy

im trying to figure out my problem with this also...i am considering an 18x8.5 front and 18x9.5 in the rear. both are 35 offset. will this rub anything? or can i run a really low profile tire and have it clear? what is your advice on this?

Fred

Turbonut

iTrader: (1)

Use the calculator from the web site I posted. 8.5" 35 offset will move the wheels 14 mm closer to the strut, outside additional 24 mm. In other words wheel will be 9/16" closer to strut, tire will hit, outside will be @ 15/16" closer to fender.

my_jdm_rx7

well......I used that calculator and it reall didnt tell me ****...says and I quote "The clearance from stut housing to the inside of the wheel will be 2mm LESS
The outside edge of the wheel will EXTEND an extra 24mm" what the **** does that tell me? My brain doesnt work in mm...

Turbonut

iTrader: (1)

Thought I'd better add:
multiply mm times .0393701 to obtain inches.
Or if brain doesn't want to function, use this:
http://www.sciencemadesimple.net/EASYlength.html

2a+RoN

guys, I am planning on running FD(50mm offset I believe) wheels on my FC. I was wondering if I should get 15mm or 25mm spacers? and also where can I purchase the spacers and longer studs for it??? TIA

-Aaron

my_jdm_rx7

Im guessing the 25mm, it would get you closer to stock than the 15mm...I would GUESS. But, Im still stuck on whether or not my new wheels are gonna hit the fender or not!!!! ROAR, I would like to know before I buy them...I am not trying to be difficult, really Im not!!! I just want a solid, YES or NO..I have used the calculator and it doesnt tell me ****..I just wanna know..will a 16x7 with a +29mm offset with a 225/50/16 HIT the fender OR the strut??????