Notices
GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

2007 GL450 22x8.5 rims - what tires?

 
Old 07-03-2019, 03:57 PM
  #1  
Newbie
Thread Starter
 
Join Date: Aug 2016
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
2001 ML 320
2007 GL450 22x8.5 rims - what tires?

Hello all,
Recently I got myself a 2007 GL450. One of the previous owners have installed 22x8.5 rims with Nitto NT420s tires in 285/40 R22. When I got the car it had 40.5psi at the back and 39.5psi on the front. The ride was very bumpy. I have deflated tires to 32psi and ride is a little better. 2tires are bad and needs to be replaced soon. 2 tires are ok. I am trying to decide my course of action.
Option #1 - get myself 2 new Nitto tires of the same size and call it a day
Option #2 - replace all 4 tires with new Nittos
Option #3 - purchase stock 19" wheels and go for a different size
Option #4 - switch to 265/40 R22 tires and go with Pirelli Scorpion Zero or Hankook Ventus or Toyo Proxes
Option #5 - switch to 275/45 R22 Hankook Ventus

I was leaning towards the Option #4, but after little more research I think Option #5 is the most attractive at this time.

What do you guys think?

Last edited by wenter; 07-03-2019 at 05:19 PM. Reason: add
wenter is offline  
Old 07-03-2019, 05:08 PM
  #2  
MBWorld Fanatic!
 
Join Date: Aug 2003
Location: In my garage
Posts: 6,040
Received 213 Likes on 195 Posts
E55, SL600, GL450, GL63
If bouncy, you have shock/strut issues. 22" tires should not cause your issue.
BlownV8 is offline  
Old 07-03-2019, 05:17 PM
  #3  
Newbie
Thread Starter
 
Join Date: Aug 2016
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
2001 ML 320
Car was bouncy on 40psi. On 32 psi it is much better.
wenter is offline  
Old 07-03-2019, 08:28 PM
  #4  
MBWorld Fanatic!
 
Join Date: Aug 2003
Location: In my garage
Posts: 6,040
Received 213 Likes on 195 Posts
E55, SL600, GL450, GL63
32 PSI on 22" wheels + Mercedes GL = bent wheels. If bouncy, there is something wrong with your suspension. I'm not saying that it didn't improve the ride; rather, if it did, your suspension needs work or your wheels are crazy heavy cast wheels and your shocks/struts are fried.
BlownV8 is offline  
The following users liked this post:
Yup497 (07-04-2019)
Old 07-06-2019, 07:16 AM
  #5  
Senior Member
 
Join Date: Apr 2004
Location: Germantown, MD
Posts: 402
Likes: 0
Received 3 Likes on 2 Posts
'07 GL450
Originally Posted by BlownV8 View Post
32 PSI on 22" wheels + Mercedes GL = bent wheels. If bouncy, there is something wrong with your suspension. I'm not saying that it didn't improve the ride; rather, if it did, your suspension needs work or your wheels are crazy heavy cast wheels and your shocks/struts are fried.
Are you referring to the air struts? Wouldn't symptoms of bad air struts be obvious in other ways? eg. sagging on the side of the bad strut?

I have no idea nor expertise regarding the bent wheels aspect; however, if it's just the ride quality, then, I am inclined to side with the OP: tire pressure issue.

That notwithstanding and to answer the OPs question: if you can get your hands on (or borrow) some stock rims (option #3), then that might provide insight as to BlownV8's suspension concern; otherwise, I too would go with Option #5
Miguk_Saram is offline  
Old 07-06-2019, 04:31 PM
  #6  
MBWorld Fanatic!
 
Join Date: Aug 2003
Location: In my garage
Posts: 6,040
Received 213 Likes on 195 Posts
E55, SL600, GL450, GL63
There is a shock/air spring setup in front and in back. Sometimes, the air spring is good but the strut/shock is bad so you get a bouncy and or car that has a lot of sway. The rear shocks go out every 80 to 100k miles and the fronts tend to fail more often. A sunk car is typically caused by a bad air spring and is not the same as the shock. Air spring controls height and the shock controls the bounce/suspension rebound speed. Leaking internals on a shock will cause a bouncy and uncontrollable ride and that's what I think is happening to the OP's car.
BlownV8 is offline  
The following users liked this post:
Yup497 (07-12-2019)
Old 07-12-2019, 03:24 PM
  #7  
Newbie
Thread Starter
 
Join Date: Aug 2016
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
2001 ML 320
Have some info that might be valuable for someone.

I have installed 275-45-22 tires on my truck and those tires are too big for the front. They rub against the wheel well liner. One day after I got the new tires I discovered that I have a long crack along one of the wheel seams. Took off the wheels with tires.

Got myself a set of wheels and tires off 2012 X166. They fit nicely. Ride quality is much better. Tires are Nitto Motiva 275/55/r19

Bottom line for me: original wheels and tires works best.

I have some oil swelling on the rear shocks. They are going to be replaced in near future with Bilsteins. As for the front - I have ordered a microphone with a long cord, will zip-tie it to a front strut that I suspect makes sounds and will see if it is bad or not. If bad - will get new Bilstein front struts with air springs. Previous owned had replaced the air springs on the front and back with cheap China springs.
wenter is offline  
 

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: 2007 GL450 22x8.5 rims - what tires?


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: