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#1 |
Registered User
Join Date: Nov 2017
Location: Anthem AZ
Posts: 281
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Front tires "scrub" when turning after disc brake conversion
Hi all, I have just completed a front end disc brake conversion on my 1970 c10 using classic performance front end steering and spindle kit.(2/12" drop). It has changed the angle of the tires when i turn into or have to turn sharp to back into spaces. the tires "scrub" i guess i could call it they dont roll smooth anymore and it's quite annoying as when they are doing this it creates resistance to the rolling. How can i fix this? I have had it aligned and i saw the specs they are good and there is no alignment issue while going down the road. Any help would be appreciated it's really bothering me.
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#2 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,610
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Re: Front tires "scrub" when turning after disc brake conversion
Are the tires scrubbing the fender lip or the inner wheel Well?
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#3 |
Registered User
Join Date: Nov 2017
Location: Anthem AZ
Posts: 281
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Re: Front tires "scrub" when turning after disc brake conversion
[QUOTE=geezer#99;8367795]Are the tires scrubbing the fender lip or the inner wheel Well?[/QUOTE
No, the tires are not touching anything but the ground, it's just that the tires now angle when turning Last edited by elorenzof; 10-20-2018 at 10:58 AM. Reason: Better response |
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#4 |
laying low
![]() Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,232
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Re: Front tires "scrub" when turning after disc brake conversion
Have a look at the inside lip of the wheels. They may be rubbing the lower control arm when turned. Common issue with drop spindles and 15” wheels. Easy fix.
__________________
Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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#5 |
Registered User
Join Date: Nov 2017
Location: Anthem AZ
Posts: 281
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Re: Front tires "scrub" when turning after disc brake conversion
Ok thank you i will look at that. I have it at the shop right now im goona go in and lower the rear tomorrow. I'll look then. thank you. what is the fix would you put spacers in?
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#6 |
laying low
![]() Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,232
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Re: Front tires "scrub" when turning after disc brake conversion
If upon inspection you see evidence of the wheel rubbing the lower control arm when turned it usually will contact the outer lip area around the lower ball joint. This is a common issue for us using stock offset 8x15" wheels with lowered spindles.Many of us have gained the needed clearance by grinding the lip in that area back a couple of inches. If the wheel is rubbing there will be witness marks on the wheel and control arm. You may be able to add a 1/4" wheel spacer to get enough clearance. Many of us chose to grind the lca.
Look it over good first and see if this is the case with yours then use the forum search button to see numerous threads on it.
__________________
Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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#7 | |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,610
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Re: Front tires "scrub" when turning after disc brake conversion
[quote=elorenzof;8368154]
Quote:
Tire scrub, not rub! Clearly you’ve changed your ‘Ackerman’! Look here for info on that. https://en.m.wikipedia.org/wiki/Acke...ering_geometry Wider tires and offset spindles will do that. |
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#8 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: Front tires "scrub" when turning after disc brake conversion
Do you have 15” wheels?
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1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
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#9 |
Registered User
Join Date: Nov 2017
Location: Anthem AZ
Posts: 281
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Re: Front tires "scrub" when turning after disc brake conversion
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