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Discussion Starter #1
Hi all,

My 215/65/r15 Cooper Cobras came in today for my ‘65 coupe. Now, I’m trying to figure out which wheels to get. I wanted 15x7, but I don’t know what backspacing or if those will fit. I don’t want rubbing, spacers, or rolled fenders. Also, I’m specifically looking at Torq Thrust D’s.

Should I go 15x7? 15x6? And what backspacing?

Thank you!

P.S. Suspension is stock for now
 

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I have 15x6 4.5BS Torque Thrust II on my 66 with 205/60R15. Given the room on mine I see no reason your slightly larger tire won't fit for sure on the 6". Not sure if the 7 would hit the fender. I'm sure others will chime in.
 

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Spammer Hammer
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If you are specifically looking at original 15x7 TTD’s with 3.75” BS they will work fine with 215 tires. If you ever want to go wider, you might consider something with 4.25” BS.
 

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Discussion Starter #4
Really? If true that’s great, because it seems that most all parts shops stock 15x7 3.75” BS. I’m happy to get those if they will fit. Much easier too.

But I’ve seen here that some say it’s tight or even rubs with 215, 15x7, and 3.75” BS. Is that false?

I’d prefer to go with the 3.75” BS if it will work. It seems if I want 4” or more I’ll have to place a custom order with American Racing, and that sounds pricey.
 

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Discussion Starter #5
In this thread they talk about 3.75” BS being less than ideal:

 

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Spammer Hammer
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Less than ideal if you want to run wider than 215’s. I ran 225’s on mine. The only rubs I had up front was when turning and dipping...like into a driveway. On the rears, they would rub with passengers in the rear seat. 215’s...no problem.

Hard to beat Summit....

 

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Discussion Starter #8
But with 15x7, 3.75”, 215, will the tires/wheels stick out beyond the fender? Definitely don’t want that.
 

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Spammer Hammer
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You will want to do a proper alignment. Use the street performance specs.

 

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@Huskinhano 's car 15x7x3.75 215/60/15 SoT front suspension -1.25 camber View attachment 740303
I would say running much more tire on this BS may be a little dicey. I have a Street or Track front suspension. My springs are Scott Drake .620" coil that they list as 600 pound per inch. The upper arms are lowered 1". My camber was at 1.25° now 1.125°, not a huge difference. My fender lips are rolled. I still get a little rubbing on my left side under some extreme conditions. My front fender lips are 24.75" my rear is 25.50" I don't think I could run any wider tire such as a 225/60/15 tire.
 

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Discussion Starter #16
I don’t plan on running any more tire than 215 with this setup. Just want to know if I’ll be good with 3.75” BS on 15x7.

I definitely DO NOT want to roll fenders or rub. Also, I wonder if the fact that I’ll be running 215/65 instead of the more common 60 will make an impact on this decision.

Also, how will my stock suspension play a part in all this? Next thing planned is a shelby drop, but I don’t plan to get around to upgrading the suspension anytime soon.

Should I pull the trigger on the Summit’s 15x7 3.75” BS? Or custom order 15x7s with more backspacing?
 

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I don’t plan on running any more tire than 215 with this setup. Just want to know if I’ll be good with 3.75” BS on 15x7.

I definitely DO NOT want to roll fenders or rub. Also, I wonder if the fact that I’ll be running 215/65 instead of the more common 60 will make an impact on this decision.

Also, how will my stock suspension play a part in all this? Next thing planned is a shelby drop, but I don’t plan to get around to upgrading the suspension anytime soon.

Should I pull the trigger on the Summit’s 15x7 3.75” BS? Or custom order 15x7s with more backspacing?
not really the best option all the way around. It MIGHT work ok these car didn't exactly get precision built back in the day so ever car is different ,
The best fit for 15x7 is 4.25BS and a 225/60/15 will fit
16x8x4.5 is good with 225/50/16 fender rolling likely needed and -camber
17x8x4.75 slam dunk fit with 225/45/17
 
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