Dropping my coupe with 20's, fitment questions , confused from all the research ..
 

I have a 2005 g35 5at sport with 245/35/20's on it , the rims are either 20x8.5 or 20x9.5 , im not sure coz i bought it with em on but thats what the manufacturer makes them in ...

I think researching has confused me more then before ..all im trying to do is clear the gap while keeping a comfortable ride ( i dont race or track , just for looks ) i also dont want it "slammed" . I was gonna pull the trigger on some Eibach prokit g35 coupe springs and a rear camber kit , but after reading i hear people saying that if i have the sport package then its better to get 350z lowering springs instead because of spring rates???

Also will I need spacers and will i have to roll my fenders

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No one will be able to really answer your questions until you know exactly what your wheel specs and offsets are.

heres the link for the wheel / size and i think the wheels are 8.5 x 20 .. they are stern st-2 touring .. btw i realized they have to be 8.5 based on the specs

http://www.maxspeedperformance.com/x...1&shop_by=size

so based on the bolt pattern which should be 5x114.3 , the offset is either 20 , 32 or 38 lol with the size of 20x8.5 can anyone tell from the picture.. At least i narrowed it down that much lol

The offset may be stamped somewhere on the inner barrel of the wheel.

Best way is to take off 1 wheel on the front and one on the rear and check . the link only shows us what wheel options there are so it can be any size until you take it off and check .
remove wheel
turn it over
on the spoke somewhere it will tell you 20x?
and et ?

Those are conservative off sets, you shouldn't have clearance issues. I'd rather see you go with Tein 350Z H-Techs, closes the gap and gives you a factory ride. Had you really done as much research as you claim you'd also be buying/installing a front camber kit. It doesn't matter how much you lower our Gs without the camber kit you'll be buying tires frequently! I'm using SPL adjustable a-arms, with the right install and alignment you can get very close to OE specs....Gary

ok im heading to the garage to pull a wheel off ....

Gary , i did the research and will def be buying a front camber kit as wel however when the previous owner installed the wheels and tires im pretty sure he didnt align it after because the 2 front tires are wearing uneven so the lifespan on them will probably last 5000 miles before i need to replace them ( rear are still new ) , so i figured ill break the payments up to be easier on me and get the 2 front tires and front camber kit together....

I'm running -2.5* up front and my previous set of tires wore pretty much evenly for 40k miles.

geez , thats kinda odd i would think , your one of the lucky ones im guessing

ok so they are 20x8.5 and the offset is 32 , at least thats what im thinking because the rim only comes in either a 20 or 32 offset for g35 , and it says 32 on the wheel, so now that we got that figured out :)

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ohhh , gary think you pretty much answered my question now that i re-read ... then ill go ahead and buy the 350z h-techs since a stock like ride is what im looking for ... so you dont think any spacers will be needed ... just want to buy everything all at once

just checked the rear wheels they are the same as up front ... i also looked into the tien h techs and they are only .3 / .2 " drop ??? i have an 1.25" give or take a bit up front/back of space?