Last time opinion on tires - The 1947 - Present Chevrolet & GMC Truck Message Board Network

norville · 07-25-2005, 10:01 PM

Well I beating this thing silly so, here's a pic, believe it or not it is lowered 3" the back and 1 coil in the front. If I drop in an 8 in it the weight will most likely drop the front another 1" and I'll do the same to the rear.

Now to the point: The tires on this truck are 235/75/15 on 7" rims. Now I have a set of 8" rally's and I need a tire size opinion. Should I stay at the current size @ 28" I will be going wider. Or do I drop a size Like a 295/50/15(26.5")

Lastly to me it looks like the fronts are bigger. They are not. Maybe I should go bigger in the rear and small on the front. Opinions and pics appreciated.

bob

jordon johnson · 07-25-2005, 10:32 PM

my truck has the 235/75s on it and i finally got some 15/8s to and im not real sure on what size i want to go with either?????

cliffsta · 07-26-2005, 12:02 AM

wowsers, i like, am fixing to buy a set of 15x8 wheels for my truck too, and i wanna keep the same overall height as stock as to not mess up the speedometer...

Anybody got a link to a chart or something... or what size tire would be wider but about the same height?

haha like, 2 replies to a thread and nothing but more questions

86swb · 07-26-2005, 12:22 AM

I got 255/70/15 on my 8" Rally's and all is well with my speedometer as far as I can tell.

Justins76 · 07-26-2005, 02:51 AM

I used 255/70R15s as well. It'll be approx the same height at 235/75R15s.

23.5*.75*2/2.54+15=28.878" dia
25.5*.70*2/2.54+15=29.055" dia

norville · 07-26-2005, 05:30 AM

I added the pic to the first post. oops.

Well I thought 275/60/15's for the same overall diameter. Pep's has 'em for $64 a piece. Or if I went smaller height I'd do 295/50/15 back and 245/60/15 front 26" tire. Lastly I didn't figure it out but, I'd do big/small by 1"-1 1/2"

bob

07-25-2005, 10:01 PM	#1
norville Senior Member Join Date: Jun 2004 Location: Mountain Top, Pa Posts: 323	Last time opinion on tires Well I beating this thing silly so, here's a pic, believe it or not it is lowered 3" the back and 1 coil in the front. If I drop in an 8 in it the weight will most likely drop the front another 1" and I'll do the same to the rear. Now to the point: The tires on this truck are 235/75/15 on 7" rims. Now I have a set of 8" rally's and I need a tire size opinion. Should I stay at the current size @ 28" I will be going wider. Or do I drop a size Like a 295/50/15(26.5") Lastly to me it looks like the fronts are bigger. They are not. Maybe I should go bigger in the rear and small on the front. Opinions and pics appreciated. bob __________________ 1986 C10 Scottsdale 5.3, TH400 Last edited by norville; 07-26-2005 at 05:25 AM.

07-25-2005, 10:32 PM	#2
jordon johnson Registered User Join Date: Mar 2004 Location: austin ky Posts: 104	my truck has the 235/75s on it and i finally got some 15/8s to and im not real sure on what size i want to go with either????? __________________ 94 cobra!!!!!!LOL 90 gmc 4x4 ext cab swb 355 6in lift blue 85 4x4 lwb 350 4spd red 87 1/2 ton 2wd lwb 305 th350 red83 1/2 ton 4wd lwb ---- 700r4

07-26-2005, 12:02 AM	#3
cliffsta Stepsides RULE Join Date: Jul 2004 Location: Pineville, LA Posts: 1,921	wowsers, i like, am fixing to buy a set of 15x8 wheels for my truck too, and i wanna keep the same overall height as stock as to not mess up the speedometer... Anybody got a link to a chart or something... or what size tire would be wider but about the same height? haha like, 2 replies to a thread and nothing but more questions __________________ 1981 Chevy C10 Custom Deluxe Stepside 350 V8, headers, side exhausts, 3-speed auto SOLD 1980 Chevy C10 Custum Deluxe Stepside 305 V8, Edelbrock Performer Intake, Edelbrock 1406 600CFM 4-barrel, TH350C. Bent rod. SOLD 1984 GMC Sierra Classic Longbed 6.2L Diesel SOLD 2009 Kawasaki KLX-250S too many mods for this signature 1999 Honda Accord EX 4-cylinder, 17" Motegi Wheels 215/45/17 Sumitomo tires, Tein S-Tech lowering springs, KYB GR2 shocks, Acura TL 20mm rear swaybar, debadged, blackhoused headlights, Short-Ram Intake Cardomain of the Accord

07-26-2005, 12:22 AM	#4
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	I got 255/70/15 on my 8" Rally's and all is well with my speedometer as far as I can tell. __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS Last edited by 86swb; 07-26-2005 at 12:23 AM.

07-26-2005, 02:51 AM	#5
Justins76 OutOfMyMind & I'llNeverKnowWhy Join Date: Apr 2004 Location: Another world, some other time Posts: 672	I used 255/70R15s as well. It'll be approx the same height at 235/75R15s. 23.5.752/2.54+15=28.878" dia 25.5.702/2.54+15=29.055" dia __________________ -Justin-Out of my mind and I'll never know why 1976 Chevrolet Silverado C10 350 4bbl / TH350 Big10 longbed 1986 Pontiac Firebird T-Top 5.0L TPI 700R4 WS6 1992 Pontiac Firebird T-Top 5.0L TBI 700R4 My cardomain page I don't like to save, it's more fun to spend!! Last edited by Justins76; 07-26-2005 at 02:53 AM.

07-26-2005, 05:30 AM	#6
norville Senior Member Join Date: Jun 2004 Location: Mountain Top, Pa Posts: 323	I added the pic to the first post. oops. Well I thought 275/60/15's for the same overall diameter. Pep's has 'em for $64 a piece. Or if I went smaller height I'd do 295/50/15 back and 245/60/15 front 26" tire. Lastly I didn't figure it out but, I'd do big/small by 1"-1 1/2" bob __________________ 1986 C10 Scottsdale 5.3, TH400

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