Front end collision question??

Rhasenbank88 · 03-13-2019, 09:37 PM

Hey guys, recently got into a fender bender. Rear ended someone doing about 10 mph, YES I KNOW but the old man slammed on the brakes for no reason and was all woozy on pills. Still should have been paying more attention. Anyways it did about 10 grand in damage, just got it back two weeks ago and the shop did a very nice job. However, I swear something is a little off unless it is all in my head. It seems like it shakes/vibrates when I hit the brakes at any speed over 30-40 mph. The steering wheel doesn't shake, it's just coming from the front end. Just feels a lot different when braking now, could my alignment have been thrown off?Because I took it to Nissan a few days ago and had them look at it while I was getting my oil changed. They said it looked fine, and the brakes looked fine but I don't know how thorough their inspection was. The car is a 2017 with under 30k miles, I bought it new and this is the only incident. Any ideas on what it could be?Maybe a wheel weight flew off? haha

old guy · 03-13-2019, 09:54 PM

Just guessing here since I'm not able to drive it .
A wheel weight you would feel in the steering wheel while driving over 30-50 mph
I think maybe your rotors may have got gummed up at the body shop waiting to be repaired ..... run your car up 35-40mph and slam on the brakes until you come to a complete stop, do this 3-4 times! See if this helps
Good luck

Rusty · 03-13-2019, 10:01 PM

Try bedding the pads first. Here's one of many links on how to do it.

https://brakeperformance.com/bedding-in-rotors.php

If this doesn't work. Get your rotors cut. And rebed the pads.

Rhasenbank88 · 03-13-2019, 10:04 PM

Ok thanks guys, gonna try those. Is this due to the car sitting outside in the rain for a month? I’ve been driving it two weeks, would have thought normal braking by now would have fixed it.

Rusty · 03-13-2019, 10:08 PM

Quote:

Originally Posted by Rhasenbank88

Ok thanks guys, gonna try those. Is this due to the car sitting outside in the rain for a month? I’ve been driving it two weeks, would have thought normal braking by now would have fixed it.

Sitting in the rain for 2 weeks. Your rotors got a nice layer of rust on them. When you drove the Z. The rust removed the bedding layer on the rotors. Happens everytime I wash my Z.

SouthArk370Z · 03-13-2019, 10:10 PM

Quote:

Originally Posted by Rhasenbank88

Ok thanks guys, gonna try those. Is this due to the car sitting outside in the rain for a month? I’ve been driving it two weeks, would have thought normal braking by now would have fixed it.

Just sitting doesn't usually mess up the brakes. If there are pad deposits on the rotors, normal braking isn't going to help. As per others above, go through the bedding procedure. If that doesn't help, you need to start looking at suspension and steering parts.

JARblue · 03-13-2019, 10:15 PM

Your brake pads were pressed into the rotor when you collided with the vehicle ahead as long as you were holding the brake; the harder you press the brake the harder the pads press into the rotor. Depending on how long this period was and how hot your brakes were at the time, it is easily possible that a large amount of pad material was transferred onto a single location on your rotors creating a high spot and the resulting shake you are experiencing. Properly re-bedding the pads is a good DIY solution or you can pay someone to resurface or "turn" the rotors as suggested above.

03-13-2019, 09:37 PM	#1 (permalink)
Rhasenbank88 Base Member Join Date: Mar 2017 Location: Cedar Lake, IN Posts: 10 Drives: 2017 370z m6 Rep Power: 8	Front end collision question?? Hey guys, recently got into a fender bender. Rear ended someone doing about 10 mph, YES I KNOW but the old man slammed on the brakes for no reason and was all woozy on pills. Still should have been paying more attention. Anyways it did about 10 grand in damage, just got it back two weeks ago and the shop did a very nice job. However, I swear something is a little off unless it is all in my head. It seems like it shakes/vibrates when I hit the brakes at any speed over 30-40 mph. The steering wheel doesn't shake, it's just coming from the front end. Just feels a lot different when braking now, could my alignment have been thrown off?Because I took it to Nissan a few days ago and had them look at it while I was getting my oil changed. They said it looked fine, and the brakes looked fine but I don't know how thorough their inspection was. The car is a 2017 with under 30k miles, I bought it new and this is the only incident. Any ideas on what it could be?Maybe a wheel weight flew off? haha

03-13-2019, 09:54 PM	#2 (permalink)
old guy A True Z Fanatic Join Date: Apr 2015 Location: S.E. Michigan Age: 68 Posts: 2,710 Drives: 13 magma touring Rep Power: 2684369	Just guessing here since I'm not able to drive it . A wheel weight you would feel in the steering wheel while driving over 30-50 mph I think maybe your rotors may have got gummed up at the body shop waiting to be repaired ..... run your car up 35-40mph and slam on the brakes until you come to a complete stop, do this 3-4 times! See if this helps Good luck __________________ I better walk before they make me run....

03-13-2019, 10:01 PM	#3 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,219 Drives: 2011 Nismo GM 6M Rep Power: 2684438	Try bedding the pads first. Here's one of many links on how to do it. https://brakeperformance.com/bedding-in-rotors.php If this doesn't work. Get your rotors cut. And rebed the pads. old guy likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

03-13-2019, 10:15 PM	#7 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	Your brake pads were pressed into the rotor when you collided with the vehicle ahead as long as you were holding the brake; the harder you press the brake the harder the pads press into the rotor. Depending on how long this period was and how hot your brakes were at the time, it is easily possible that a large amount of pad material was transferred onto a single location on your rotors creating a high spot and the resulting shake you are experiencing. Properly re-bedding the pads is a good DIY solution or you can pay someone to resurface or "turn" the rotors as suggested above. Rusty and old guy like this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

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03-13-2019, 10:04 PM	#4 (permalink)
Rhasenbank88 Base Member Join Date: Mar 2017 Location: Cedar Lake, IN Posts: 10 Drives: 2017 370z m6 Rep Power: 8	Ok thanks guys, gonna try those. Is this due to the car sitting outside in the rain for a month? I’ve been driving it two weeks, would have thought normal braking by now would have fixed it.