The things you do for family

[Jim's 72]

Sooo... My brother-in -law has a 70 Chevelle in the body shop. It is actually in the paint booth so we are expecting it in about a month( the body shop said a week so we did the math lol). He wants to run Foose Nitrous 5 in an 18/20 combo. The suspension is getting a bone stock rebuild...until the wallet recovers. When the funds allow, we will be going full air-ride with the spindles and control arms to be determined at a later date. I guess what I am getting at is, we want to run the car for the next few months before winter sets in. What is the biggest rim/ tire we can stuff under it that should work at stock height and also when we do the air-ride set up. I know there are alot of variables involved, so I am looking to eer on the safe side so we don't have to spend money twice. He is definatley more of a show-then go guy so the bigger and deeper the better lol. Again...not my car, but I better keep him happy so his sister dosen't give me a hard time lol. I know this is kinda the unanswerable without alot more info, but this is what I have to go on right now. Feel free to throw out any ideas

Thanks guys
JIm

[buickfunnycar.com]

Jim,
A very safe setup on a '70 Chevelle would be a 18x8 & 20x8 with 275/35 & 285/35 rubber.I had those on in this picture w/o issues and my car is lowered a little.
http://i124.photobucket.com/albums/p3/topfueljohn/DSC02978.jpg

http://i124.photobucket.com/albums/p3/topfueljohn/DSC02961.jpg

[Vegas69]

Don't you mean 10"

[buickfunnycar.com]

Don't you mean 10"

No,the wheels in that picture were 20x8's and yeah...I thought they were too skinny and sold them.

He was asking for 'safe' recommendations,that's why I mentioned that combo.
Besides,I don't even know if Foose offers the Nitrous in a 10" width.

A '70 Chevelle wheelwell will usually swallow up a 9",9.5" or 10" wheel easy,whether that will be considered safe when further suspension modifications are made would need to be determined by the OP.

[street3285]

On a stock suspension chevelle that has been lowered a little, you can run an 8.5" up front and a 10" in the rear. Should not be a problem at all.

[Vegas69]

You listed a 275 and 285mm. No way either belongs on a 8 inch rim especially in a 20.

[Flash68]

You listed a 275 and 285mm. No way either belongs on a 8 inch rim especially in a 20.

Agreed. 9 or 9.5 wide is ideal for 275/285 tire.

[buickfunnycar.com]

You listed a 275 and 285mm. No way either belongs on a 8 inch rim especially in a 20.

Like I mentioned,I bought those used from a friend...I didn't spec them out.

[jy211]

spend the money on the suspension first, then the wheels...

[Jim's 72]

Thanks guys. It looks like we will be going with a 10 in the rear and 8.5 in the front. Just need to figure out the backspacing we need. Yes, I would do the suspension first, but like I said, it's not my car or my money..for a change lol.
Jim

[buickfunnycar.com]

Thanks guys. It looks like we will be going with a 10 in the rear and 8.5 in the front. Just need to figure out the backspacing we need. Yes, I would do the suspension first, but like I said, it's not my car or my money..for a change lol.
Jim

I run 10's with 5.75" b/s Jim and it's about perfect for my application,6" would have had me rubbing on the inside.

[DriverzInc]

If you are going with the Nitrous I's, then they are custom built, and you can pick backspace.

In that case, on an 18x8 and 20x10 set, I would suggest a 8" with a 5" backspace and up to a 255 wide tire up front.

Note: For a stock suspension, I would run a 9 with a 275, and more backspace, but for an AirRide set up, and for the sake of being safe, I would suggest the 8" with a 5".

For the rear, a 10" wheel with a 5.75, and my suggestion... go with a 275/40/20. This is wide enough to look good. Will give you all the clearance in the world for when you drop that sucker on AirRide.

Note: For a stock, or slightly lowered car, I've done as wide as a 305 wide tire on a 10", but again, to be safe, and to set you up with a wheel and tire combo that will definitely work before and after your suspension mods, I would suggest the 275/40/20.

Fyi: the Nitto NT05 comes in both sizes you need.

Hope some of this helps.... :cheers: :lateral:

[DriverzInc]

Here is what a 275/40/20 looks like on a 20x10. This car was not lowered at all.
The 275/35/20 is what we put on the back of Johnny's black Tempest.

Hope these photos help>

http://i37.photobucket.com/albums/e99/Hensons/SuperSpoke_1970_gto_05.jpg

http://i37.photobucket.com/albums/e99/Hensons/DelMar%202009/Johnny_Parkedinbooth.jpg

[tukes23]

I am running Foose Nitrous IIs on my 66 GTO.

http://www.lateral-g.net/forums/showthread.php4?t=16289

They are 18x8s with 225/35/r18 BFG KDW (front) and 20x10s with 265/30/R20 BFG KDW (rear). They are a custom backspace front and rear. Even at the lowered ride height, they still have not rubbed. the rears have about 3/8" of space on either side of the sidewall and sit up inside the fenderwell. the fronts can turn lock to lock and not hit anything, but only the tire sidewall is inside the fenderwell. we bought one of those Wheel-Rite measuring tools and ordered the wheels based on those measurements. i would highly recommend using this tool.