How is the 5th Gen QuickString different from the 4th Gen?
The difference is in the toe bar and having the full 4 wheel system. The attachment pins are spaced further out to allow for a better grip on the rim or within the bead. The new toe bar set up allows you to accurately and quickly measure toe at the tire, instead of total toe. The new design also allows you to square your car and check for any thrust angle issues without having to set up a separate string system.
Doesn’t the string need to be at the center of the wheel hub?
You may have seen lots of tech guys measure at the hubs, but the race car and daily driver don’t ride on the hubs. Camber adjustments can change your track width, so placing the string lower on the tire will give you a better idea of what the contact patch is doing.
What is the most important step to stringing the car?
Make sure your steering wheel is straight and lock it in place. We cannot emphasize this enough. If your numbers are off, check the steering wheel before making any adjustments. This is critical to your success and to keeping your frustration at a minimum
What if I have off-set tires?
The key to offset tires or a varied track width is to know the difference between front and back.
The easiest way to determine set up for these situations is to set up your QuickTrick frames on the rims. Then run a tape measure from the rear of the front drivers side to the rear of the front passenger side and get the total measurement and then repeat this on the back tires.
Example on a smaller sports car:
Tires are 7″ wide on front and 8.5″ wide on the rear.
Track width when measuring as defined above is: 58″ front track width and 60″ rear track width
This gives you the difference without having to calculate the tire offset in addition to track width.
With this example, your rear is 2” wider than your front. That will be equal to 1” on each side. So, you will start your string at the 3” mark in the back and you know it should be at the 4” mark in the front to allow for the extra inch from the rear offset.
How do I know my track width?
See above or reference your specs in a handbook/vehicle manual