Buying new wheels in the spring, size will be 19x8.5 and offsets available are 40 or 25 or 22.

I know members like Maxboost and Nmexmax after spacers are running effective offsets of around low 20s.

I also know Maxboost is running Z32 BBK, and his wheels clear the caliper. So assuming that the 4-pot Wilwood BBK sold by Fastbrakes are relative in size, if not narrower, I should have no problem running 25 offset?

Reason for the question is I am trying to get wheels with clearance for BBK w/o spacers. No point in buying the 40 and then running 15mm spacers for more $$$ to get it flush with fender.

Thanks for the help

 

It also depends on the design of the spokes. Cause I run a +33 offset as nmexmas has the same rims as I do and I don't need any spacers. He only used spacers to get the rims more flush with the car. I have the cobra rotors also.

 

+45mm offset here......and no clearance problems

 

You do know he is talking about z32 calipers which are bigger than the brakes you have now

 

yes....i do,

SER's clear the z32 calipers too......

 

Well I havn't seen any pics of those rims clearing those caliper so I wouldn't know but like I said above, it all depends on the design of the rims.

 

the Wilwood Superlite calipers sold in the Fastbrakes kit are bigger than the Z32 calipers.
about 3/8" IIRC.

 

matt, having compared my wilwoods to my z32 calipers, the wilwoods actually provide a tad bit MORE clearance (assuming both clipers are centered on the rotor). I expected the opposite, but measured with them fitted and they are about the same the z32s would be if the "NISSAN" was ground off.

to the OP, they both fit easily under my 18x8/30offset, 17x8/35offset, and 17x7.5/30offset wheels.....

 

Thanks for the info irish, which means given my wheel size is 19x8.5, all available offsets (22,25,40) will or should clear the Wilwood.

However, I noticed your 18x8 G35C wheels which are 30 seems to be pretty flush. Do you think 8.5 wide and 25 offset with 245/35/19 might rub on an Eibach drop?

 

18x8.5 +45 offset and the Z calipers fit with a teeny bit of room to spare, but they are nowhere near flush. This is just the test fitment, the calipers have not been installed yet. (on Rays 57f)

 

If offset is distance between the center of the wheel and the mounting hub, then a 45 offset will have more room than say a 25 no?

 

45 would have less, since it's measured from the center of the wheel going in. +45 would mean it's tucked in more - similar to how the OEM wheels are +45 and how people try to find an aftermarket wheel in the +35 to +30 offset to make it flush(er).

Think of it this way, relative to the center of the wheel (symbolized by a pipe below), the offset goes from + to -.

Extreme right means it's tucked in, extreme left is tucked out.

-----|+++++

 

Bump to this, now that I figured out 19x8.5 ET25 with 245/35/19 will NOT rub in the back for a 5th gen, I am 90% certain it will NOT rub in the front either (since nmexmax runs 245/40/18 on 18x8.5 ET28 after spacers in front, 3mm is no big difference right?). Can someone verufy? Thanks

 

I'm pretty sure that will rub.

How low is your car? Also are your rear fenders rolled?

 

Eibach drop, so 1.3F, 1.0R, and no rolled fenders. Did you mean rub in front or back?

 

You're gonna rub in the back i'm gonna say. Because the front is already pretty flat compared to the rear fenders.

 

I think n 8.5" rim with 25 offset will rub in both front and back on dips. With my G setup (8" 30 offset and 235s) I had to shave the little lip inside the rear fender where it meets the bumper. If you do the same you should be fine in the back.

Up front though, the 8/30 setup is damn near flush and I did test it once on a curb (compression, basically). It was less than 1/2" from touching the wheel well lip.

If you're gonna run those big boys up front, you may want to roll the fenders...



all that said, the tolerances on every car are a bit different. Are the i30 fenders identical in how much clearance they have vs. a maxima?

 

I believe the fender clearances are the same as the Maxima. So given the situation, should I just get 19x8.5 40mm ET and then run spacers? 10mm front and back maybe?

 

ok I just went out and did a little test for you. Using a vertical plum bob from the inner lip of the front fender hung down to the tire, here are my measurements:

And this is with my 17x7.5 G35 winter wheels that have a 30 offset and 225/50/17 tires on them, so they sit in about 1cm compared with the 18s.

1. distance from tread edge to fender (horizontally): about 1/2"
2. distance from top of sidewall (likely rub area) to fender: less than 1/4"

soo.....the wheels you're talking about with those tires will stick out (very rougly) 1.2" farther than my winters do....and there really isn't much extra clearance from what I see.

If anything, run 235/40/18 up front

 

that's what I would do. You can always fine-tune it with various sizes of spacers if needed (hell, my Cherokee runs 1.75" spacers in the rear!). If you get the 25s and they don't fit well, you really have no options, ya know?

 

Very true, thank for all the help.