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Discussion Starter #1
I just got the Nova back on the road after 20 yrs of sitting, and I need tires at this point. Been searching the forums for a definitive answer. Any help would be much appreciated! I'm wanting to get the Torque Thrust D series

1970 Nova 4 door

Will either of these front setups fit disc brakes when I do that swap?
15x6 3.75" backspace with 215/60/15
15x7 3.75" backspace with 215/60/15

Will either of these rear setups work?
15x7? with 3.75" backspace with a 235/60/15 tire (drum brakes for now)
15x8? with 3.75" backspace with a 235/60/15 tire (drum brakes for now)
 

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here's a link from steves nova site. a lot to read thru but sure your answer is there to be found. the front will be different from drums to disks. an some disk set-ups may move your mounting out 1/2-5/8''. after disks installed on my 66 i had to change from 3 3/4'' BS to 4 3/8'' BS with a 205 70 tire.
 

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The 15x6 in front should work for sure, the 15x7 might rub with disc brakes. In the rear, that 15x8 isn't fitting unless your axle is narrowed. With a 235 tire the 15x7 should probably work, it looks like it's only sticking out about 1/8" farther than my setup, but you might have to trim the inner fender depending on how things fit and what springs you have.

For reference, I have 15x7 4.25BS wheels all around, with 235/60-15 on front and 255/60-15 on back. I haven't been on the road, but everything seems to clear.

For a disc brake swap that doesn't stick out (DIY project), take a look at these links:
 

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Everything you posted will fit with the exception of the 15 x 8 with only 3.75" backspace....and 8" needs at least 4.375" backspace to fit, 4.5" is better yet.

I've got 15 x 8.5" with 4.875" backspace with a 275/60-15 M?T Radials and it just clears the outside edge. '72 with factory front disc/rear drum, stock width rear axle. Passenger side will just rub the sidewall against the outer lip on a hard corner or with 2-3 people in he back seat, just enough to scratch up the sidewall so i trimmed that inner lip a bit. Stock ride height.
 

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Discussion Starter #5
Thanks for the responses. T
I made a mistake. The 15x8 are 4.5 backspacing, not 3.75
 

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Discussion Starter #6
I also want to say that my Nova is on stock L6 suspension still and it's sagging pretty good. I do plan to rebuild it all.

Maybe I'll look into
15x6 front
15x7 rear
 

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15x8 4.5BS might get into your shock or mounting plate, but they should fit. I put my brother's 17x8 Torque Thrusts with 255/50-17 tires on and it fit, but was really close to the outer quarter panel lip and up inside. I have 5-leaf springs on back, so I probably sit much higher than a mono-leaf car would. With stiff springs it would probably be fine with just trimming the lip. 235/60-15 tires would probably help a lot.
 

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Discussion Starter #8
Driver side rear fits perfect but the passenger side is tight. I'll have to trim the lip some
405582
405583
405584
 

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Do you think maybe the passenger side was repaired? The lip looks way different..

My 64 had the passenger side quarter panel replaced in a prior life and not really well executed.. That side was tighter on the tire as well. I massaged it out a bit from inside the wheel house. You might also be able to loosenthe leaf spring mounts on the. axle and see if you can shift the axle over a little bit to make a lot more space..
 

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Discussion Starter #11
Yeah, it had a repair on that quarter along time ago. This was my dad's old car that's seen quite alot

I may try the 15x7 in the rear with 225-60-15
 
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