305/30/20 Rubbing

[tamboRL]

I have a 2016 Mustang GT PP which i have lowered with vogtland springs 1.3 drop all around. after lowering the car on stock PP 19" wheels i notice that the car sits at the rear with negative camber. after a week of letting the springs settle i bought a niche targa anthracite wheel 20 x 8.5 front and 20 x 10 rears with Nitto Nt555 G2 265/35/20 fronts and 305/30/20 rear. the negative camber was very obvious with the wide wheel so i took it back to the dealer and they corrected it adjusting to the factory specifications. now that the car sits nicely on a sudden curve the wheels at the rear rub but no on bumps. how do i fix this? would a new wheel with 20 x 10.5 dimension correct the issue and retain my 305/30/20 set up or do i just buy a 295/285-30-20 tires. please help because i know some even run a 315 in the rears.

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[kkakonn]

I have a 2016 Mustang GT PP which i have lowered with vogtland springs 1.3 drop all around. after lowering the car on stock PP 19" wheels i notice that the car sits at the rear with negative camber. after a week of letting the springs settle i bought a niche targa anthracite wheel 20 x 8.5 front and 20 x 10 rears with Nitto Nt555 G2 265/35/20 fronts and 305/30/20 rear. the negative camber was very obvious with the wide wheel so i took it back to the dealer and they corrected it adjusting to the factory specifications. now that the car sits nicely on a sudden curve the wheels at the rear rub but no on bumps. how do i fix this? would a new wheel with 20 x 10.5 dimension correct the issue and retain my 305/30/20 set up or do i just buy a 295/285-30-20 tires. please help because i know some even run a 315 in the rears.

What is the offset on the rear 20x10? Also a 305/30 rear on an NT555 G2 has a overall width of 12.32, thats almost as wide as some 315 tires. Either way it shouldn't be rubbing even on hard cornering unless ur rears are running an aggressive offset

 

[aggieStang]

You may want to check your cradle alignment. Im was off by 1/4" after my spring install and caused rubbing with my 305s. I am installing steeda alignment bushings to help mine. Not sure if thats your problem, but doesnt hurt to check.

 

[tamboRL]

What is the offset on the rear 20x10? Also a 305/30 rear on an NT555 G2 has a overall width of 12.32, thats almost as wide as some 315 tires. Either way it shouldn't be rubbing even on hard cornering unless ur rears are running an aggressive offset

offset on the rears are +40. what would u consider an aggressive offset?

 

[Jeff's FRC]

How much camber are you running out back?

 

[tamboRL]

How much camber are you running out back?

rear:

cross camber: before 0.2 degree / 0.2degree actual
Total toe: before 0.27degree / 0.45degree actual
thrust angle: before -0.02degree / -0.05degree actual


camber toe:

left -0.4degree
right -0.6degree

 

[kkakonn]

offset on the rears are +40. what would u consider an aggressive offset?

rear:

cross camber: before 0.2 degree / 0.2degree actual
Total toe: before 0.27degree / 0.45degree actual
thrust angle: before -0.02degree / -0.05degree actual


camber toe:

left -0.4degree
right -0.6degree

+40 is not aggressive.
Should be pretty standard. So ur current rear camber is positive 0.2? Could be why it's rubbing. If it's only doing that on hard cornering try adding more negative camber to the rear. Should help with clearance

 

[tamboRL]

+40 is not aggressive.
Should be pretty standard. So ur current rear camber is positive 0.2? Could be why it's rubbing. If it's only doing that on hard cornering try adding more negative camber to the rear. Should help with clearance

so i can adjust t 0.5degree? more positive. cool thanks

 

[kkakonn]

U need to add more negative camber for outside clearance. Changing it to 0.5 will make it worse.

 

[tamboRL]

so should i go more negative or positive?

 

[Evolvd]

Your camber is -1.8 stock, you should be at least that much if not closer to -2.0

 

[Jeff's FRC]

Yeah, get your rear camber to -1.5 to -2.0 and you should be good. Who did your alignment? They're not even close to factory specs...

 

[Need4SpeedMotors]

The wheel is fine and the tire size is fine, its your camber adjustment

adjust it to -1.5 and youll be fine.

 

[tamboRL]

thanks guys, appreciate it. ill do camber to -1.5 monday. i got the alignment from the dealer.

 

[tamboRL]

The wheel is fine and the tire size is fine, its your camber adjustment

adjust it to -1.5 and youll be fine.

I'm going with your suggestion and hope everything would be ok. thanks appreciate your feedback

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