GOLFMK8
GOLFMK7
GOLFMK6
GOLFMKV

Loud "pothole impact" sound over bumps normal?

Al_in_Philly

Go Kart Champion
Location
Philadelphia USA
My '15 R makes some noise on potholes, but I can't recall it ever being quite so loud as that recording, especially at such low speeds. I will tell you though that the tires make a big difference in the ride and sound. My R came stock wearing Bridgestone RE 050A 19x235/35 tires. About a year back I switched to a set of Michelin Pilot Sport 4S's. I was shocked at how much more compliant and quieter the Michelins were. Though I still had great "feeling," bump absorption, as well as the accompanying "thud" was noticably improved. I know that VW has long dropped mounting those Bridestones, but your tires might be part of the problem. I emphasize "might."
 

dunkelweizen

Ready to race!
Well, I guess glad to see it is not just me also. I have GTI with DCC and over some pretty shallow potholes (like an inch or two deep) at even 10-15mph, it feels like my car just fell off a cliff. I even had a few time (at low speed) where there is clear 'tink' sound of metal hit like the wheel itself hit pavement. FTR, I did check air pressure right away when I got home and it was fine (36PSI). These dampers are such Jekyll & Hyde. Works great except when it isn't...
 

jimlloyd40

Autocross Champion
Location
Phoenix
Car(s)
2018 SE DSG
Well, I guess glad to see it is not just me also. I have GTI with DCC and over some pretty shallow potholes (like an inch or two deep) at even 10-15mph, it feels like my car just fell off a cliff. I even had a few time (at low speed) where there is clear 'tink' sound of metal hit like the wheel itself hit pavement. FTR, I did check air pressure right away when I got home and it was fine (36PSI). These dampers are such Jekyll & Hyde. Works great except when it isn't...
Did you recently get new front brake pads?
 

Mk_GTI

Ready to race!
Location
Hellinois
Car(s)
2018 Golf R
The problem is likely 19” wheels with 35 series tires. Swapped my 17” 45 series winter set a couple weeks ago with the OEM 19” set and noticed how much more harsh hard bumps and potholes feel and sound now. Comfort setting helps a little, but still spine jarring.

Consider 18’s if the roads in your area are bad.
 

al3xh

New member
Same here, my GTI does not have DCC and is on stock 18'' rims/tires, springs/shocks and has that loud banging "bottom out" sound on certain potholes.

98354726_537107373833721_8426293477574180864_n.jpg


This one is not that big of a pothole (2'' deep) but the GTI seems to bottom out over it. It has been inconsistent since it's gone over bigger bumps at similar speeds without issue. It's almost like something about the geometry of the pothole has more to do with it...
 

dunkelweizen

Ready to race!
Did you recently get new front brake pads?
Nope, still on original brakes. And have checked for shipping pucks more than once to confirm no shipping pucks. Also, typically on Normal or Sport DCC modes, but doesn't sound it like Comfort would have helped judging from experience of others.

@al3xh I run 225/45/17 Conti WinterContact for my winter setup and it made very little (barely perceptible) difference as far as harsh impacts over potholes go vs my 18" Austins on factory 225/40/18 Bridgestones. As a matter of fact, it was with my 17" winters that I hit a pothole about same depth as your picture above, but with more defined/sharp edge and blew a tire and bent that wheel going over it at about 35mph. The car in front of me and behind me both hit the same pothole at roughly same speed. Neither vehicle had to pull over because of a flat...
 

al3xh

New member
Interesting, I would've thought the softer tires and ~10% more sidewall would help immensely. Huh... I guess at this point I just want to know whether this is normal for all other GTI owners. It seems like it's an issue for some but most people seem to not have this problem or probably live in areas where potholes are not an issue?
 

riceburner

Drag Race Newbie
Location
West Chicagoland
Its definatwly odd if people even on 17s experience it.
I always stay in comfort on dcc pretty much.
Have replaced swaybar endlinks so far, better ride of course but hasnt helped this issue. Been looking oved the car for things that are worn and am coming up blank for sure

Overall, it sounds like its not our cars that need fixing but the roads! ;)
 

riceburner

Drag Race Newbie
Location
West Chicagoland
kind of reminds me of a geometry thing the MK6 has always been troubled with - shaking at high speeds, typically somewhere in the 60-80mph range. I was part of a large group who pretty much tried EVERYTHING to get it to go away; tie rods, all bushings, all swaybars/endlinks, strut mounts, wheels/balancing, alignments, hub assemblies, brakes... at the end of the day pretty much nothing solved it for anyone, some would get lucky and it would go away somewhere along the line lol.
 

al3xh

New member
It seems like less suspension travel in the MK7 has been cited by some as the reason why this happens. Out of curiosity, I rented a 2017 Golf TSI and went over that same pothole and it felt a lot better. Definitely could hear/feel it but no metal on metal banging sound. I imagine the suspension travel length must be comparable between the GTI and TSI (correct me if I"m wrong) and given that the TSI has softer springs I would assume it would be susceptible to bottoming out more easily?

Another factor could be that the tires were 195/65/15, giving it 40% more sidewall, which is a substantial increase compared to what we can get on the R/GTI due to clearance concerns w/ brake caliper, rubbing, etc...
 

Al_in_Philly

Go Kart Champion
Location
Philadelphia USA
Same here, my GTI does not have DCC and is on stock 18'' rims/tires, springs/shocks and has that loud banging "bottom out" sound on certain potholes.

View attachment 173547

This one is not that big of a pothole (2'' deep) but the GTI seems to bottom out over it. It has been inconsistent since it's gone over bigger bumps at similar speeds without issue. It's almost like something about the geometry of the pothole has more to do with it...
Hey, stop taking pictures of my street! Now I remember where I left my Coke.
 

ATR

Drag Race Newbie
Location
Baltimore
Car(s)
'17 Golf R 6mt
Don't use comfort mode on crap roads. I've noticed that my car will bottom out much harsher in comfort mode then in normal or race modes.
 
Top