A&Q about 350Z
Q:
looks like I have too much space between the top of the rear tire and the bottom of the fender well. I just upgraded to 19 inch axis wheels with 245/35s in the front and 275/30s in the back. The new tires appear to be the same height as the factory tires. Perhaps I should have gone to the 275/35s in the rear. Are there any adjustments to the suspension or do you have to change the springs? Bob
A:
Bob- there are no suspension adjustments to be made for ride height on the stock Z, unless you go to adjustable coilovers. Do a search, I think you'll find a lot of discussions on lowering springs- from variable rate springs like the Eibach Pro-kit springs I use, to constant rate springs like those offered by Hotchkiss. Each spring set has differing amounts of drop as well as pros and cons.
A:
true dkurma, I know that the outsides of your tires will a lot faster than normal also.
A:
i know i a guy that has put 20's on his g35, it is tucked with h and r springs. so i think with 19's it would be perfect. i think the h and r's r similar to the eibachs. coilovers r great, but they r so expensive. id go with the normal lowering springs that lower the car almost an inch. the springs that lower the car the most r the kgmm springs, they go an inch and a half from and back. ure situation, u dont wanna lower more than an inch
A:
could the guys that have their cars lowered please post some pics and include what springs u used
A:
In case this helps someone's thought process (some G35 coupe fitments listed in case it helps anyone meet their goals).
Oem springs
Front:314 Rear:342
Eibach's as noted (first number is the softer initial rate, followed by the higher final rate)
350Z 296/384 front 316/421 rear
G35c 229/337 front 274/463 rear
RSR 350Z springs (just a wee bit progressive F&R, maybe one coil is progressive)
345/417 F+10% R+22%
Transfers +12% roll stiffness to rear
RSR G35 coupe springs (progressive front and rear)
315/315 F+0 R-8%
Transfers +8% roll stiffness to front
Hotchkis 350Z springs (linear springs)
340/330 F+8% R-3%
Transfers +12% roll stiffness to front
Tein S-tech 350z (fronts are progressive, rears are linear)
386/402 F+23% R+16%
Transfers +7% roll stiffness to front
Tein H-tech 350z (fronts are progressive, rears are linear)
358/375 F+14% R+11%
Transfers +3% roll stiffness to front
Tein H-tech G35 coupe (fronts are progressive, rears are linear)
324/260 F+ 5% R-22%
Transfers +27% roll stiffness to front
Tein S-tech G35 coupe (fronts are progressive, rears are linear)
358/274 R+14% R-18%
Transfers +32% roll stiffness to front
Tanabe GF210 Series 350Z
336/375 F+7% R+10%
Transfers +3% roll stiffness to rear
Tanabe NF210 Series 350Z
314/353 F+0 R+3%
Transfers +3% roll stiffness to rear
Tanabe NF210 Springs G35 COUPE
297/336 F-5% R-2%
Transfers +3% roll stiffness to front
Tanabe DF210 Springs G35 COUPE
308/353 F-2% R+3%
Transfers +5% roll stiffness to front
Kg/mm springs 350Z
DR21 super sport 15mm drop
246/398 front 252/409 rear
Kg/mm springs 350Z
DRacing 30mm drop
252/454 front 252/482 rear
Espelir springs (the U.S. importer recently changed specs, I do not believe the newly listed specs are correct, since the new one's are extreamly high. And when I called the company to ask if the springs are linear or progressive, they told me Linear, turn's out they were absolutley wrong, they are in fact progressive. I show the old specs for those reasons, take it with a grain of salt, same thing for the 350Z fitment)
Espelir G35 coupe springs
409/460F F+30% R+37%
Transfers +7% roll stiffness to rear
Espelir 350Z springs
381/460 F+22% R+37%
Transfers +15% roll stiffness to rear
Nismo S-tune (uses progressive springs, especially in rear)
448/504 F+43% R+48%
Transfers +5% roll stiffness to rear
2003 G35 6MT sedan
Crawford pleneum
K&N
Acosta Racing high flow cat pipes
Custom true dual X-pipe & twin Injen SES mufflers
Hotchkis/EVO350 sways
Koni coilover front Koni shock rear
350Z VLSD conv
Rouge shifte