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'04 G35 Coupe - grinding over bumps

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Old 07-28-2015, 11:28 PM
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'04 G35 Coupe - grinding over bumps

Got an 04 G35 Coupe on 19's that grinds whenever I hit a bump going decently fast. It's all stock besides the rims... Any idea? I can't see the fender or tire rubbing... I thought maybe the suspension was bottoming out. I'm very confused!
Old 07-28-2015, 11:29 PM
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Originally Posted by jjohns2711 View Post
Got an 04 G35 Coupe on 19's that grinds whenever I hit a bump going decently fast. It's all stock besides the rims... Any idea? I can't see the fender or tire rubbing... I thought maybe the suspension was bottoming out. I'm very confused!
is it a grinding or a knocking of some sort? Prob some worn out suspension components is my guess

Show a Pic of your car and how low it is.
Old 07-29-2015, 12:22 AM
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Definitely a grinding. You can hear it and feel it. Stock height from what I understand, just on bigger rims
Old 07-29-2015, 12:23 AM
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And it's independent on all four tires. As in sometimes it's in one corner in the front based on the bump or both in the back... It all depends on how fast I'm going and how I hit the bump.
Old 07-29-2015, 01:02 AM
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Look under your fenders for scrapes in the metal or paint and also on your springs and other suspension components for signs of rubbing and scraping. Your rear tires look like they are about flush with the outer edge of the panel... probably rubbing against it when the suspension compresses a bit. The offset on those rims might not work with your car unless you roll the fenders.
Old 07-29-2015, 09:30 AM
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Took another glance around the wheel well and sure enough found a 4x6" cutout in the wheel well where the tire had rubbed away the plastic. Couldn't find anything in the rears, although I know something's there because they grind as well.

Are there stiffer springs I can buy to stiffen the suspension, or as coilovers my only option? If so I'll just find a set of stock 17" rims and put them back on.
Old 07-29-2015, 12:48 PM
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Lower control arm bushings, inner-side.
Old 07-30-2015, 07:33 PM
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Do you have a link to these bushings?

Is it a simple replace the old with the new and voila my suspension is stiffer?
Old 08-04-2015, 08:46 AM
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Your tires look tall as all getout. Get shorter ones. Love life.
Old 08-05-2015, 09:58 AM
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I'm going to start by moving down to some 18's with similar sized tired and seeing where that gets me.

Can anyone answer my bushing question I asked above? ^^^

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