...

Go Back   Lateral-g Forums > Technical Discussions > Chassis and Suspension
User Name
Password



Reply
 
Thread Tools Display Modes
  #1  
Old 07-16-2020, 10:06 PM
colorado80439 colorado80439 is offline
Senior Member
 
Join Date: Jul 2014
Posts: 298
Thanks: 215
Thanked 239 Times in 95 Posts
Default Fitment issues with 285 35 18 69 DSE

So I'm in the middle of a build with a 69 Camaro DSE subframe hanging the fenders and modding the inner fenders. I have an 18x10 rim 6.25 backspace and a 285/35/18. The car is on jack stands and we pulled the shocks off to look at fitment through the full range of travel. If I raise the tire into the fender about 1 inch from the upper bump stop, I can only turn the wheel through less than half it's turn radius before it hits the fender at about the 2 o'clock or 10 o'clock position depending on the direction I'm turning the wheel. They are GM fenders, planning to roll the lip which will give a little more. The camber is set to DSE's initial set up which definitely negative. Spoke with DSE and they recommend a 275/35/18 with 6.125 backspace and they say with the 275 set up it will probably rub in some situations, but again I'm only getting half my turn radius when compressed 1 inch from the top bump stop. Is this normal? Will I never be that compressed when into a hard turn?
Thanks in advance, Dave
Reply With Quote
  #2  
Old 07-16-2020, 11:31 PM
randy randy is offline
Senior Member
 
Join Date: Jan 2011
Posts: 1,012
Thanks: 3
Thanked 68 Times in 43 Posts
Default

285 with the fenders trimmed still touches. On my 67 I have 275s and mine will rub at full lock. Thing is I’m running 1.5 neg camber.
Reply With Quote
The Following User Says Thank You to randy For This Useful Post:
colorado80439 (07-17-2020)
  #3  
Old 07-17-2020, 07:30 AM
colorado80439 colorado80439 is offline
Senior Member
 
Join Date: Jul 2014
Posts: 298
Thanks: 215
Thanked 239 Times in 95 Posts
Default

Quote:
Originally Posted by randy View Post
285 with the fenders trimmed still touches. On my 67 I have 275s and mine will rub at full lock. Thing is I’m running 1.5 neg camber.
Ill bet I'm at least 1.5 degrees of camber and I'm good at static ride height, I worried about when the suspension is compressed then im into the fender at half the turn radius
Thanks for the reply
Reply With Quote
  #4  
Old 07-17-2020, 03:39 PM
Matt@BOS's Avatar
Matt@BOS Matt@BOS is offline
Lateral-g Supporting Vendor
 
Join Date: Oct 2008
Posts: 2,036
Thanks: 2
Thanked 37 Times in 30 Posts
Default

When the car is at ride height, how much space do you have between the tire and fender? As a general rule of thumb, we've found that when turned, with plenty of compression travel, about 1.5" of clearance is needed.

This also depends on how low, or high, the static ride height is. Do you have some photos you can post up?
__________________
http://bestofshowcoachworks.com

(760)480.0227

1969 Camaro - always broken GM Design winner
1965 Mustang - widebody fastback
2006 Coyote swapped "Rental Car"

Up next:
Steve's GT40
Reply With Quote
The Following User Says Thank You to Matt@BOS For This Useful Post:
colorado80439 (07-17-2020)
  #5  
Old 07-17-2020, 06:01 PM
colorado80439 colorado80439 is offline
Senior Member
 
Join Date: Jul 2014
Posts: 298
Thanks: 215
Thanked 239 Times in 95 Posts
Default

Quote:
Originally Posted by Matt@BOS View Post
When the car is at ride height, how much space do you have between the tire and fender? As a general rule of thumb, we've found that when turned, with plenty of compression travel, about 1.5" of clearance is needed.

This also depends on how low, or high, the static ride height is. Do you have some photos you can post up?
Good to know, I'll get some pics posted next week
Thanks again for the input
Reply With Quote
  #6  
Old 07-28-2020, 09:49 AM
colorado80439 colorado80439 is offline
Senior Member
 
Join Date: Jul 2014
Posts: 298
Thanks: 215
Thanked 239 Times in 95 Posts
Default

Looks like at ride height we have 1 inch of clearance. Looks like we will go with that and raise ride height if needed or increased spring rate. Thanks for the help
Attached Images
 

Last edited by colorado80439; 07-28-2020 at 03:50 PM.
Reply With Quote
  #7  
Old 08-19-2020, 12:06 PM
EVIL SS EVIL SS is offline
Member
 
Join Date: May 2020
Location: Chicago West Burbs
Posts: 54
Thanks: 241
Thanked 9 Times in 9 Posts
Default

Quote:
Originally Posted by colorado80439 View Post
Looks like at ride height we have 1 inch of clearance. Looks like we will go with that and raise ride height if needed or increased spring rate. Thanks for the help
Did you get this sorted out?

Dave
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 08:23 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright Lateral-g.net