15x9 +35 offset scraping on upper wishbone?
#1
15x9 +35 offset scraping on upper wishbone?
Greetings. I just started running 15x9 +35 offset wheels with 225/45 Rivals. One issue I am having, which is unexpected to me, is that at lock on either side of steering the front wheels, the inner edge of the rim is scraping against the upper wishbone - the side of the upper wishbone that faces the rear of the car.
I can see where it is hitting when I lift up the front of the car, and I can hear it scraping when driving in my driveway
I am interested in what the customary wisdom is on addressing it. Is it: (i) modification of the top and perhaps bottom wishbones to give a little more room; (ii) somehow limiting the travel of the steering mechanism; (iii) spacers; (iv) live with it/don't turn the steering wheel all the way.
I am not particularly excited about the last option because my wife occasionally drives this car.
I couldn't immediately find a thread on the issue. I'm hoping I'm missing something here.
Thanks.
I can see where it is hitting when I lift up the front of the car, and I can hear it scraping when driving in my driveway
I am interested in what the customary wisdom is on addressing it. Is it: (i) modification of the top and perhaps bottom wishbones to give a little more room; (ii) somehow limiting the travel of the steering mechanism; (iii) spacers; (iv) live with it/don't turn the steering wheel all the way.
I am not particularly excited about the last option because my wife occasionally drives this car.
I couldn't immediately find a thread on the issue. I'm hoping I'm missing something here.
Thanks.
#3
EDIT: Everything I have seen thus far on line relates to increasing steering angle, not decreasing it. I suspect that there must be a way to decrease steering angle but have not determined yet precisely what must be done.
ANOTHER EDIT: OK, I have taken off the steering rack boot and I think I've got it. A "donut" around the rod between the inner tie rod and the rack, around the shaft coming out of the rack, on each side. If anyone has the thickness/width of the spacer that has worked for them I would appreciate it.
Last edited by sirfixalot; 05-10-2015 at 08:05 AM.
#4
Then tell everyone else what size. I might need these soon!
#5
Find when it rubs on the ground, mark the steering wheel position, replicate the steering wheel position (back it off just enough to not rub) when the car is up in the air, then measure the gap in the steering rack and make spacers to fit.
Then tell everyone else what size. I might need these soon!
Then tell everyone else what size. I might need these soon!
Doesn't control-arm to wheel clearance change with wheel position through travel? The UCA would arc through the wheel's barrel as the wheel moves upwards If i'm envisioning this correctly.
Going from weighted on the ground to on-stands would net different clearances.
#6
Doesn't control-arm to wheel clearance change with wheel position through travel? The UCA would arc through the wheel's barrel as the wheel moves upwards If i'm envisioning this correctly.
Going from weighted on the ground to on-stands would net different clearances.
Going from weighted on the ground to on-stands would net different clearances.
Right, but find the steering wheel position when it rubs (on the ground, going over bumps whatever), then replicate that steering wheel position when the car is in the air.
The steering rack won't change positions in the air or on the ground, so as long as the steering wheel position is correct, the spacers should be made to the right thickness.
#10
You are not really ******* with the steering rack by putting a shim/donut/spacer on the shaft coming out of the steering rack, as long as you put that shim on the "far" end - against the inner tie rod. While you are widening the turning radius, it will not otherwise have an impact on the steering rack.
I suspect that you could simply take a 3/8" wide section of coolant hose, use a worm drive coolant hose clamp or heavy duty zip tie and make this work at least temporarily - i.e., no need to disconnect the tie rods to limit the steering travel. This becomes apparent after you pull away a steering rack boot and stare at it for 5 seconds. I will work on it over the weekend and hopefully get a good measurement.
I suspect that you could simply take a 3/8" wide section of coolant hose, use a worm drive coolant hose clamp or heavy duty zip tie and make this work at least temporarily - i.e., no need to disconnect the tie rods to limit the steering travel. This becomes apparent after you pull away a steering rack boot and stare at it for 5 seconds. I will work on it over the weekend and hopefully get a good measurement.
#11
yep mine scrape.. just stay away from full lock.
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Your Source For Motorsports Safety Equipment
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#13
steel is stronger than aluminum. it messes up the wheel, but i'm not worried about it messing up the control arm. if i'm spinning i'm more worried about staying away from things, like walls.
__________________
OG Racing
Your Source For Motorsports Safety Equipment
WWW.OGRACING.COM
800.934.9112
703.430.3303
info@ogracing.com
OG Racing
Your Source For Motorsports Safety Equipment
WWW.OGRACING.COM
800.934.9112
703.430.3303
info@ogracing.com
#19
My car is an NB1. Installing a couple spacers by way of wrapping and tying plastic rings around the rack where the rack attaches to the inner tie rod, will be much easier than replacing the rack, not to mention less expensive and with no need to go through the trouble of sourcing it. That said, installation of a rack that addresses this issue without a kluge fix would be more elegant.
#20
I have the same setup where the wheels touch the control arm and the tires rub on the Racing Beats sway bar. I installed 5mm spacers and they still hit the control arm but the tire rub on the sway bar is gone.
If you get spacers make sure you get hubcentric. This is the exact ones I got: 2 5mm Hubcentric Wheel Spacers 4x100 54 1mm Hub Fits Toyota Mazda Scion | eBay
If you get spacers make sure you get hubcentric. This is the exact ones I got: 2 5mm Hubcentric Wheel Spacers 4x100 54 1mm Hub Fits Toyota Mazda Scion | eBay