Wheel alignment dealer says all 4 must be done?
#1
Burning Brakes
Thread Starter
Wheel alignment dealer says all 4 must be done?
I am getting my front tires replaced and was going to get the front aligned for the $70 the dealer charges for car front alignment but the dealer tells me corvettes have to have 4 wheel alignment for $200?
Is the dealer pulling my leg or is this SOP on corvettes? Has anyone here had just the front wheels aligned
Is the dealer pulling my leg or is this SOP on corvettes? Has anyone here had just the front wheels aligned
#2
Le Mans Master
Yes and no. Ideally a 4 wheel should be done. The front alignment is based off rear, if rear is out ot can effect front. C7 has adjustable rear caster which adds to the cost. If tire dealer offers free alignment check and rear was all " green" ( results are color coded red bad green good) and rear toe is equal on both sides; you could just do front. Many shops push 4 wheel alignments on everything. With IRS it should be at least checked every year or if tire wear is abnormal. With a straight rear axle you should only need front alignment, if the back is out something is bent.
The following users liked this post:
smajicek (09-05-2018)
The following users liked this post:
vdavenp802 (10-01-2018)
#4
It is absolutely a 4 wheel alignment. Camber, caster and toe can also be adjusted on the rear. In fact rear caster settings have an incredible amount of impact on how well the car handles. Tragically, most dealers don't know how to adjust it, and don't even have the necessary tool.
Below are the DSC Sport alignment specs that I use.
Below are the DSC Sport alignment specs that I use.
Last edited by Foosh; 01-29-2021 at 12:19 PM.
#5
Safety Car
I am getting my front tires replaced and was going to get the front aligned for the $70 the dealer charges for car front alignment but the dealer tells me corvettes have to have 4 wheel alignment for $200?
Is the dealer pulling my leg or is this SOP on corvettes? Has anyone here had just the front wheels aligned
Is the dealer pulling my leg or is this SOP on corvettes? Has anyone here had just the front wheels aligned
#6
Race Director
Member Since: Mar 2001
Location: Bonneville Salt Flats, 223mph Aug. '04
Posts: 17,419
Received 5,214 Likes
on
3,457 Posts
Yeah, do 4-wheel, but that doesn't mean you have to have it done a the dealership. In fact, unless they actually service a lot of newer Vettes I wouldn't let 'em touch it. Take it to a competent alignment shop, assuming you might have one. You have any other local Vette people to talk with?
Now, as for the cost, I've no idea what your alignment check might run, but unless I missed the boat in elementary math $70 X 2 is NOT $200. "Hey, we got a 'new' Vette t'do." "Great; jack up the price; he won't care!" "Yeah, he probably spent more than that on latte's this week!"
Now, as for the cost, I've no idea what your alignment check might run, but unless I missed the boat in elementary math $70 X 2 is NOT $200. "Hey, we got a 'new' Vette t'do." "Great; jack up the price; he won't care!" "Yeah, he probably spent more than that on latte's this week!"
#7
Race Director
I am getting my front tires replaced and was going to get the front aligned for the $70 the dealer charges for car front alignment but the dealer tells me corvettes have to have 4 wheel alignment for $200?
Is the dealer pulling my leg or is this SOP on corvettes? Has anyone here had just the front wheels aligned
Is the dealer pulling my leg or is this SOP on corvettes? Has anyone here had just the front wheels aligned
Decide how you are going to use the car and adopt settings accordingly.
Note the DSC specs clearly state "occasional track" in bold print.
This means tires are going to wear as they would for a car set up for occasional track use.
A good alignment is worth a lot more than 200 bucks.
Last edited by PatternDayTrader; 09-05-2018 at 05:33 PM.
#8
I see a lot of people talking about strange wear, but I get none. I aligned my car in between the occassional track and track settings and have 5k miles on my MPSS and they are wearing perfectly even. Lots of highway and some fun roads.
#10
Burning Brakes
Thread Starter
Yeah, do 4-wheel, but that doesn't mean you have to have it done a the dealership. In fact, unless they actually service a lot of newer Vettes I wouldn't let 'em touch it. Take it to a competent alignment shop, assuming you might have one. You have any other local Vette people to talk with?
Now, as for the cost, I've no idea what your alignment check might run, but unless I missed the boat in elementary math $70 X 2 is NOT $200. "Hey, we got a 'new' Vette t'do." "Great; jack up the price; he won't care!" "Yeah, he probably spent more than that on latte's this week!"
Now, as for the cost, I've no idea what your alignment check might run, but unless I missed the boat in elementary math $70 X 2 is NOT $200. "Hey, we got a 'new' Vette t'do." "Great; jack up the price; he won't care!" "Yeah, he probably spent more than that on latte's this week!"
Last edited by smajicek; 09-05-2018 at 08:38 PM.
#11
Burning Brakes
Thread Starter
It is absolutely a 4 wheel alignment. Camber, caster and toe can also be adjusted on the rear. In fact rear caster settings have an incredible amount of impact on how well the car handles. Tragically, most dealers don't know how to adjust it, and don't even have the necessary tool.
Below are the DSC Sport alignment specs that I use.
Below are the DSC Sport alignment specs that I use.
#14
Tech Contributor
Member Since: Oct 1999
Location: Charlotte, NC (formerly Endicott, NY)
Posts: 40,089
Received 8,928 Likes
on
5,333 Posts
There are ways to do the measurement without having the special tools but you need to have the mechanic tell you how they are going to do it if they don't have the tools. One way is installing 3/16 bolts in the holes in the knuckle and using the iPhone angle app to read the angle by laying the iPhone across the two bolts. You also have to zero/calibrate the measuring device to what ever slope the car is on so that slope is read as zero. Otherwise the measurement will be in error. This has to be done on both sides of the car.
Bill
#15
Safety Car
Member Since: Dec 2009
Location: Lake Havasu City Arizona
Posts: 4,194
Likes: 0
Received 302 Likes
on
200 Posts
SoCal Events Coordinator
St. Jude Donor '12
$89 for 4 wheel alignment in my town for my C6 Z06. They wanted the young 20 year old to test drive the car for the alignment and I said NO WAY. They said they would not guarantee the alignment then and I said fine but no way was a kid going to drive my GT1 Z06. Alignment was great too.
#16
You need to talk to him about measuring and adjusting rear caster. It isn't just dealers that are having a hard time with rear caster. There just aren't many cars that have that adjustment and 3 of them are low volume GM cars. Most alignment guys will tell you it can't be adjusted but they will be wrong on the C7. It isn't a function of the typical alignment machine. A special adapter is required to fit in the rear knuckle and a separate gauge is held or magnetically attached to the adapter to read rear caster. The readings have to be hand written on the machine printout because alignment machines don't know about rear caster.
There are ways to do the measurement without having the special tools but you need to have the mechanic tell you how they are going to do it if they don't have the tools. One way is installing 3/16 bolts in the holes in the knuckle and using the iPhone angle app to read the angle by laying the iPhone across the two bolts. You also have to zero/calibrate the measuring device to what ever slope the car is on so that slope is read as zero. Otherwise the measurement will be in error. This has to be done on both sides of the car.
Bill
There are ways to do the measurement without having the special tools but you need to have the mechanic tell you how they are going to do it if they don't have the tools. One way is installing 3/16 bolts in the holes in the knuckle and using the iPhone angle app to read the angle by laying the iPhone across the two bolts. You also have to zero/calibrate the measuring device to what ever slope the car is on so that slope is read as zero. Otherwise the measurement will be in error. This has to be done on both sides of the car.
Bill
Holy cow that's a lot to take in. New owner here and trying to learn about the car and maintenance items. I can't remember the last time I had to get a wheel alignment on a car. I guess I have been lucky. Are these C7's prone to getting out of whack and what should I look for besides steering pull or tire wear to determine if needed? Is this something that should be checked periodically when up on a rack? Thanks for the great info.
#17
Le Mans Master
Member Since: Nov 2015
Location: Lake Havasu City Arizona
Posts: 7,326
Received 3,439 Likes
on
2,059 Posts
This is the model number of the tool the adjuster should have in their tool bag.
CH-47960-10
If they don't have it find a shop that does. They are out there, but far and few in between.
CH-47960-10
If they don't have it find a shop that does. They are out there, but far and few in between.
Description: Wheel Alignment : Suspension : Corvette : 2014-2019
CH-47960-10 will be a flat, machined tool with two holes and one adjustable peg. It will be used in conjunction with a digital angle gauge or the current rear caster measurement gauge CH-47960 and will be used to measure the rear caster on the Y1XX. CH-47960-10 has pegs that will fit into the gauge holes of the rear knuckle to support the tool and holes for the pegs of the current tool CH-47960, or it can also be used as a straight edge for measuring caster angle with a commercially available digital angle gauge.
CH-47960-10 will be a flat, machined tool with two holes and one adjustable peg. It will be used in conjunction with a digital angle gauge or the current rear caster measurement gauge CH-47960 and will be used to measure the rear caster on the Y1XX. CH-47960-10 has pegs that will fit into the gauge holes of the rear knuckle to support the tool and holes for the pegs of the current tool CH-47960, or it can also be used as a straight edge for measuring caster angle with a commercially available digital angle gauge.
Last edited by joemessman; 09-06-2018 at 02:42 AM.
#18
I had DSC Sport align both of my C7s, and I've been running their street/occasional track settings (with slight negative camber) for 3 years and more than 20K miles on both cars with no uneven tire wear. I measure w/ a precision, digital treadwear gauge and not just eye-balling it.
Those who drive very conservatively probably won't feel any difference w/ a precision alignment, but if you drive a lot of twisty roads, pull Gs in corners, and/or do track sessions, you'll notice a huge difference.
Those who drive very conservatively probably won't feel any difference w/ a precision alignment, but if you drive a lot of twisty roads, pull Gs in corners, and/or do track sessions, you'll notice a huge difference.
Last edited by Foosh; 09-06-2018 at 09:15 AM.
#20
To do a C7 properly, will be somewhere between $200-300 at a really reputable performance alignment shop. Anyone who says they'll do it for $89.95 isn't doing it precisely, and certainly not doing anything w/ caster because an alignment rack can't measure that.
The GM alignment specs for the C7 are a broad envelope of allowable settings. The difference between an $89 alignment and a $200+ alignment is that the former will just be a measurement to see if it's anywhere inside a broad range of a parameters, and the latter will be a precise recommended setting such as the DSC specs.
And BTW, the precise DSC specs I published above are inside GM's published range of allowable alignment settings.
The GM alignment specs for the C7 are a broad envelope of allowable settings. The difference between an $89 alignment and a $200+ alignment is that the former will just be a measurement to see if it's anywhere inside a broad range of a parameters, and the latter will be a precise recommended setting such as the DSC specs.
And BTW, the precise DSC specs I published above are inside GM's published range of allowable alignment settings.
Last edited by Foosh; 09-06-2018 at 10:19 AM.