Going with 275/40/18 in the Rear - Chevelle Tech
Wheels & Tires What fits what?

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post #1 of 13 (permalink) Old Aug 28th, 17, 4:26 PM Thread Starter
 
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Going with 275/40/18 in the Rear

Tires and rims are on order (From Discount Tire) and from my research it looks like 275/40/18s on a 18X10 rim will fit stock. If anyone disagrees please let me know. thanks.
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post #2 of 13 (permalink) Old Aug 28th, 17, 4:29 PM
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Re: Going with 275/40/18 in the Rear

Depends on your backspacing on the rim. I have 285/40/18's on a 18x9.5 with 5.75 BS. As long as you have at least 5.5 you should be just fine.
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post #3 of 13 (permalink) Old Aug 29th, 17, 1:55 PM
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Re: Going with 275/40/18 in the Rear

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Originally Posted by Michael Johnson View Post
Tires and rims are on order (From Discount Tire) and from my research it looks like 275/40/18s on a 18X10 rim will fit stock. If anyone disagrees please let me know. thanks.
Thank you for your support. Please post a photo when you get them installed.
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post #4 of 13 (permalink) Old Aug 29th, 17, 5:57 PM
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Re: Going with 275/40/18 in the Rear

Quote:
Originally Posted by Michael Johnson View Post
Tires and rims are on order (From Discount Tire) and from my research it looks like 275/40/18s on a 18X10 rim will fit stock. If anyone disagrees please let me know. thanks.
What year Chevelle?

Once you go RAT, you never go back...
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post #5 of 13 (permalink) Old Aug 29th, 17, 7:13 PM Thread Starter
 
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Re: Going with 275/40/18 in the Rear

1970 rear suspension only change is Viking coil over
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post #6 of 13 (permalink) Old Aug 29th, 17, 7:14 PM Thread Starter
 
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Re: Going with 275/40/18 in the Rear

Rims have 5.75 BS
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post #7 of 13 (permalink) Old Aug 30th, 17, 1:25 AM
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Re: Going with 275/40/18 in the Rear

275's will fit fine with that width/backspace combo. You can also fit a 285 or 295,if you want.

I'm running 20x10's w/5.75" backspace and 305/30/20's on my 70 Elco, without any clearance issues.

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post #8 of 13 (permalink) Old Aug 30th, 17, 12:56 PM
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Re: Going with 275/40/18 in the Rear

Quote:
Originally Posted by Clint44 View Post
275's will fit fine with that width/backspace combo. You can also fit a 285 or 295,if you want.

I'm running 20x10's w/5.75" backspace and 305/30/20's on my 70 Elco, without any clearance issues.
I am running 315/35/17 Nittos on the back of my '70. 17X9.5 rims and 5.5" BS... its getting close to the outer lip, but no problems (even during an autocross)...

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post #9 of 13 (permalink) Old Aug 30th, 17, 2:34 PM
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Re: Going with 275/40/18 in the Rear

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Originally Posted by 1966_L78 View Post
I am running 315/35/17 Nittos on the back of my '70. 17X9.5 rims and 5.5" BS... its getting close to the outer lip, but no problems (even during an autocross)...
And you still need wider wheels for those 315's, Tony. lol Only reason I didn't go with 315's is I thought a 305 was pushing it far enough,with a 10" wheel. If American offered my wheel in an 11", I would buy them.

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post #10 of 13 (permalink) Old Aug 30th, 17, 3:13 PM
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Re: Going with 275/40/18 in the Rear

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Originally Posted by Clint44 View Post
275's will fit fine with that width/backspace combo. You can also fit a 285 or 295,if you want.

I'm running 20x10's w/5.75" backspace and 305/30/20's on my 70 Elco, without any clearance issues.
Don't the ElCo's have larger rr wheelhouses than the 'Velle?

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post #11 of 13 (permalink) Old Aug 30th, 17, 3:37 PM
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Re: Going with 275/40/18 in the Rear

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Don't the ElCo's have larger rr wheelhouses than the 'Velle?
If they do,Scott, I've never been able to tell any difference.
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post #12 of 13 (permalink) Old Sep 2nd, 17, 10:24 AM
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Re: Going with 275/40/18 in the Rear

Quote:
Originally Posted by Michael Johnson View Post
Tires and rims are on order (From Discount Tire) and from my research it looks like 275/40/18s on a 18X10 rim will fit stock. If anyone disagrees please let me know. thanks.

Just put this same combo on my 1971. Did American TT's 18X10 with 5 3/4 backspace. Plenty of room!
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post #13 of 13 (permalink) Old Sep 13th, 17, 12:30 AM
 
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I have 18x9.5 -5.5bs 275/40's in rear.. no issues they run nice
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