I have a Evo IX MR with a new wheel setup going on soon. Advan RS 17x9 wrapped in 255/40 Direzza Z1's, I figure while I'm waiting on my tire order I's look into some springs.

The car is not my DD and is used mostly for street driving with some auto-x in the future hopefully. I want some springs that will give me a subtle drop(not the slammed look) without compromising handling or performance.

After some research I've narrowed my choice to Swifts or RCE's, I may go with the Swifts because they are a little lower in the front. From what I've read these are both great products.

My question, whats the major difference between the Swift Sports and the Swift Spec-R's?
Has anyone had any issues with rubbing in either the front or rear? Under turning or hard cornering?

I know I'm definately going to have to roll the fenders on the rear with the 255's , I'll probably do the front also to be safe.

Thanks in advance, comments and opinions welcome

Nick

Either will give you great handling.

Sports v. SpecRs -- spring rates. Both will lower the car -1.4 up front and -0.8 in the rear.

Sports:
F 179-269
R 157-314

SpecRs:
F 157-358
R 153-380

No issues, running 245/45/17s on OE rims.

Depending on the wheel offset you might not have to roll the fenders. I ran 255/40/17s on my OE rims and coil-overs in the past (lower than the Swifts I have now) without issue.

http://i85.photobucket.com/albums/k6...o/DSCF0618.jpg

Hard cornering:
http://i85.photobucket.com/albums/k6...evo/mikeg3.jpg
http://i85.photobucket.com/albums/k6...evo/mikeg4.jpg
http://i85.photobucket.com/albums/k6...E_B_048512.jpg

With a +35 offset you won't need to roll the fenders. This size rim and tire combo with that offset and Swift suspension is fairly conservative.

The Advans are a +29 offset. Do you think that I will have any issues?

SmikeEvo what do the spring rates relate to. Is that basically the stiffness of the ride?

Rates are in pound per inch (lb/in). Stock rates are F 180 R 225. So the Swifts are progressivly built. There is roll-in then a nice bite. SpecRs go much stiffer than the Sports at the limit.

For that offset - there is a wheel fitment sticky. Check it out. As Hikaru pointed out, some offsets fit without issue.

Awesome resource SmikeEvo, can't believe I've over looked that. I feel like a dumbass. Thanksfor all the help

I've done a lot of research on this very combo. I'm looking to get 17x9 Advan RZ with 255/40 17 +35, Dunlop Z1's, AND lowered on Swifts. All of the info I have found show now fitment problems with the +35 offset but if you go +29 (GTR face), you will have to roll the rear fenders. Hope that helps ya mang

Awesome thanks