hey guys this is my very first post, i've been around the forum but finally registered cause i really need your help, i installed the 370z megan coilovers and they ride great, only issue i'm having is the if i go low in the rear to where the tire is tucked a little the rim would touch the lower control arm at the front side of the wheel, idk what it's called... looks somewhat like the camber arm, it only really happened on big dips if someone is sitting in the back, at first i thought it was the exhaust until i took the wheels off to raise it some, but i'm wondering if it could be that i didn't correctly set the lenght of the shock to match the springs? adding a spacer seem like it would work but my wheels are already staggered so that would make it stick out too far for my taste

 

Not sure if the z coilovers are the same as the Gs, I've got the Megan G Sedan coils and am running 295s in the back w/ no rub. What size wheels and offset are you running along w/ the tire size. There should be no suspension parts coming in contact w/ the tire, the fender liner is typically the main culprit along w/ the fender bracket (which seems to be more of an issue w/ the G coupe). The lower control arm is the aluminum part that also holds the lower end of the spring, this wouldn't be a part that would contact the tire. If there's any way you can take a pic or see what part has recently been "shined-up" from the rubbing that would be ideal. The part that may be the issue is the radius rod (part #9 in the diagram)
2010 INFINITI G37 Parts - Discount Infiniti Parts | Genuine, OEM Infiniti Parts | Infiniti Accessories | Huge Instock Inventory
This would come into play if you have a very high positive offset on a wide wheel as the wheel would be too close to the hub. This won't be caused by shock length. But while we're here did you preload the springs (about 5-10mm) prior to adjusting the shock length, tis is important. Good luck and hope this is something that can be corrected without having to get new wheels or going spacer crazy so you're poking

 

It is part #9 and the first time i didn't preload i think but after raising it a little i preloaded it this time, don't really know the offset and stuff bought it from someone *college kid * but it's actually not touching the tires it's touching the rim :/ and thanks for the help btw, I'll upload pictures of the wheels and the part in the tomorrow

 

OK, it does sound like an offset issue, or possibly an improperly installed suspension arm, and if it's hitting the wheel I would keep it parked and use another vehicle until you can get it addressed. Good luck, hopefully some pics or more info on the wheels will help.

 

Took these pics idk if it'll help, its just weird that it rubs when lowered but this is the nee current height with no rub so far

 

what are the specs of the rear wheel ? you might need a small spacer

 

I honestly dont know is there a way i can find out? I got these wheels from someone of craigslist so yeah no contact with them anymore

 

Damn, looks like it's been rubbing quite a while
Offsets are typically stamped on the inside of the wheel and it will sometimes be listed as ET +45 for example. A spacer should help, but it appears those offsets are really high. A spacer will esentially lower your offset (making it less positive), you can get them as small as 5mm all the way up to 35mm. With the amount of steel missing on your radial arm you're probably going to need at least a 10mm spacer. Just go 10mm out from your rim and see if that's going to work for you. Also if you can provide the width of the rim and the tire sizes you're running that would help. Like I mentioned previously, please don't drive it like that, rent a car if you have to

 

it actually wasn't rubbing that long maybe 15 mins was the total drive with a few heavy dips in between, it's just looks this bad on this side (passenger) because my friend was sitting in the back on this side the driver side is barely noticable, but it's been fine the past few days since i readjusted everything with the preload and correct strut height(checked the clearance and looks normal about a little more than 1/4 inch) but i think i'll also just get a small spacer , but for whoever asked the rear tires are 265 35 20, and i think it's 9.5 front and 10 rear, i'll keep you guys posted thanks again for the help

 

Glad to hear it's been OK lately, I'd go ahead and order a new radial arm though, I'm still curious about your offsets so if you're able to check the inside of one of your back rims it should be in there, post it up if you can.

 

Inside on the wide part or om the spoke? I'll look for it for you

 

Usually on the inside of the spokes but could be anywhere inside depending on the wheel, some even have it on marked on the outside clearly visible, like my Toyota truck rims.

 

ok so i took off the wheels and it didn't have any numbers on the inside sooooo yeah..... but my problem is definitely rim/offset put the front wheels on the rear and there was plenty clearance i'm thinking about just getting another front rim(already have 1 spear) and just running 4 front wheels didnt look bad with the fronts on the rear looked almost the same as with the rears, it's crazy

 

Probably a good plan, especially if you only have to get one wheel, that really didn't seem like a safe setup over the long term. Glad you have a relatively simple and cheap solution.

 

EVO Series BC-10

0101-090489 20x9.0 40 6.57 5x4.5 70.50mm call for pricing

0101-005568 20x10.5 70 8.51 5x4.75 70.30mm call for pricing

0101-0054810 20x10.5 54 7.88 5x4.5 70.50mm call for pricing

just found these specs so i'm thinking my rears are 70 offset.....