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I've posted a couple of threads. And received different answers each time. Looking for a 18x10 rim torque thrust on the back of my 77. Some same a 10inch torque thrust will fit a stock rear and some say it wont? Any body have 10 inch width rims on a 77 in the rear? If so I'd love some pics and part numbers..
I've posted a couple of threads. And received different answers each time. Looking for a 18x10 rim torque thrust on the back of my 77. Some same a 10inch torque thrust will fit a stock rear and some say it wont? Any body have 10 inch width rims on a 77 in the rear? If so I'd love some pics and part numbers..
I have 18x10 TT2s on my 69, but I do not believe the 10 are made as a standard item anymore, just 9-1/2"
I have offset trailing arms, but was always told they would work with standard arms if you move the e brake brackets.
I have 18x10 TT2s but I do not believe the 10 are made as a standard item anymore, just 9-1/2"
I have offset trailing arms, but was always told they would work with standard arms if you move the e brake brackets.
I think you are really going to need to measure this for yourself, as there may be some variation from car to car. The bulge in the tire (section width) and diameter will make a difference (tire rack site has this info). Some people have gone with as much as 5.5" backspace (which is 0 offset on 10" wheel). I couldn't go more than 5.25" BS on a 9.5" wheel (also 0 offset) with my tires 275/18-40 Bridgestone Potenza RE-11. And with that I have 1/4" of clearance with the frame at the TA pocket.
If you go with a smaller tire, I think you may gain a little room. With something close to a stock diameter of ~27", the frame is your limiting factor, so offset trailing arms may not help. They didn't for me.
To measure, you need measure the ride height from a fixed point on the body or outside edge of the suspension. Jack the car up with two jacks (I used the shock supports as jack points, but I have Van Steel offset TAs and coilovers...not sure if this is a good idea on stock TAs), remove the wheels, and carefully lower the car to its ride position to ensure the suspension is fully compressed. Then I bolted a piece of angle aluminum to the hub. The metal was cut such that outer edge of the metal was the same radius as the tire I chose. I clamped a ruler to the angle aluminum at a 90* angle. By rotating the hub I could check clearance at all points of the frame, wheel well, and TA.
Here's the set up:
I didn't do this right when I took these pictures. Because the rear end is too high, the suspension isn't fully compressed because weight has shifted forward. With the car on the ground and wheels on, my half shafts are almost perfectly level. I re-did these measurements before ordering $1,800 in wheels and used wood blocks under the rear jack point as a backup to the jack rather the jack stands. I didn't let the car rest on the wood, they were just a safety in case something slipped.
2020 Corvette of the Year Finalist (track prepared)
C3 of Year Winner (track prepared) 2019
I do not have factory suspension at this point so my input is likely not as valuable but I have both 18x10 with 5.5" BS (custom ordered) as well as 5.75" backspace torque thrusts I use on the rear of my 71. I do have some rub marks on the frame rail from running the 5.75"BS wheels, but that only happened on a road course under extreme load.
I ran 18x10 with a 5.5 backspace with stock trailing arms. I did relocate the brake mount but that was it. They will fit. It was tight but the rims did not rub at all. I had TTIIs running a 275 40 18 tire.
I put TTII on my 72 coupe, 18x10 with 5.75 backspace, tires are 295-40-18, but had to make quite a few modifications to make them fit. I don't want flares or spacers, so to get them tucked in we had to modify the trailing arms (I don't have offsets), slight mods to frame, shorten the rear spring, and modify the sway bar. Other than that they fit great!
I've posted a couple of threads. And received different answers each time. Looking for a 18x10 rim torque thrust on the back of my 77. Some same a 10inch torque thrust will fit a stock rear and some say it wont? Any body have 10 inch width rims on a 77 in the rear? If so I'd love some pics and part numbers..
I have 20 x 10 TT rims on the back of my 68 with 295/40R-20 tires and 18 x 8 TT rims with 245/40R-18 tires on front. A one inch spacer was used to avoid inner fender well rubbing on both front and rear. Previous owner did this setup. I will probably go down to 18 inch rims when the current new tires wear out. The American Racing site lists their available wheel sizes, but problem is finding a distributor that sells some of the more unusual sizes. Last time I looked they had 18 x 10 rims in TT II in chrome and polished aluminum. RA
Torque thrust help?!
