18" wheels? Tire sizes? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Slammed67 · 03-19-2002, 02:13 PM

Anyone here have 18" wheels on a lowered truck (fleetside)? I'm trying to figure out the best wheel/tires size combo. I've done some preliminary measurements and was thinking 18x9.5's in the rear with 5.25" backspacing with 285/40/18 tires. And 18x8's up front with 4.25" backspacing with 225/45/18 tires. For the rear I used my existing wheels/tires as a starting point. They are 15" wheels with 225/70/15's with 4.25" backspacing. I figured I can add an inch of tire to the inside and and 1.25" to the outside, which equals about a 285 tire, which is 11.22" wide. So maybe a 10" wide wheel would look better? For the fronts, I like the 4.25" backspacing, but want an 8" wide wheel. Any other suggestions?

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Formerly know as: "GMC Under Construction" Current project: 1967 GMC shortbed/fleetside, 350/700R4, air bag suspension. Other vehicle of interest: 1957 Chevy Bel-Air 4dr hard top, 283/powerglide, lowered 3-1/2" in front and 2 inches in the rear.

Web Site: jaySpot.com AOL Screen Name: Slammed67GMC Location: Kansas City, MO

Slammed67 · 03-19-2002, 06:42 PM

ttt

ryan68 · 03-19-2002, 07:31 PM

Ditto on that. I want to run 18's and was thinking on a little more meat since my truck isn't as slammed as Smalled67. I want to run 255/55/18 fronts on 18x8's and 285/50/18 backs on 18x9.5's, I like equal height tires. I see a guy in Tucson, AZ that runs 18" Torque Thrust II's on 18x8 front with 18x9.5 rear with 255/50/18 fronts and 295/45/18 rears.

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68 Chevy CST (327,TH400) 3/5 drop
71 Suburban 4x4 (350,TH350) 33's
Check out my web site!!! http://www.geocities.com/cst68chevy/

Reumster · 03-19-2002, 07:54 PM

A thing to consider is rotating the tires. You can't rotate tires if you run different size front and back. And most Low profile performance tires, are soft compound and wear fast. Also something to ask about when buying tires, is if they are for trucks, they do have differnt tires for cars and SUV/trucks

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1972 2wd Blazer, 350/700R4/3:73 posi/NOS. Power is nothing without control!

Andy4639 · 03-19-2002, 08:06 PM

I used 17's on mine.

They are 8" wide P235/60R-17.

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Andy
71's Are for ever!!! or 67,68,69,70,72 http://geocities.com/chevy71tpi/main.html

Reumster · 03-19-2002, 08:08 PM

yeah rear disk brakes got to have them with big wheels!!!!

Whats's up with the painted wing windows

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1972 2wd Blazer, 350/700R4/3:73 posi/NOS. Power is nothing without control!

ryan68 · 03-20-2002, 02:09 AM

I am either running Nitto NT404's or Yokohama AVS's, so they are definitly rated for a truck and 149mph, hehe.

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68 Chevy CST (327,TH400) 3/5 drop
71 Suburban 4x4 (350,TH350) 33's
Check out my web site!!! http://www.geocities.com/cst68chevy/

slammed69 · 10-13-2005, 11:40 PM

the hell with 18" go with 20s they look good on mine.

SCOTI · 10-13-2005, 11:47 PM

Geez . . .... This one has a little dust on it

.

Rooster's 67 · 10-14-2005, 05:17 AM

scott,
I have to agree, very old thread considering the amount of discusions already had on the subject.

**N2TRUX** · 10-14-2005, 08:32 AM

Do some research. You will find a much better selection of tires in 20's than you will in 18's. Your better off going with 17's or 20's if you want the same size wheel all around. If your going to stagger the sizes then 18/20 is the best looking combo and you can find decent tire sizes for the rear....

03-19-2002, 02:13 PM	#1
Slammed67 Progress = 0% Join Date: Nov 2001 Location: Kansas City, MO Posts: 2,108	18" wheels? Tire sizes? Anyone here have 18" wheels on a lowered truck (fleetside)? I'm trying to figure out the best wheel/tires size combo. I've done some preliminary measurements and was thinking 18x9.5's in the rear with 5.25" backspacing with 285/40/18 tires. And 18x8's up front with 4.25" backspacing with 225/45/18 tires. For the rear I used my existing wheels/tires as a starting point. They are 15" wheels with 225/70/15's with 4.25" backspacing. I figured I can add an inch of tire to the inside and and 1.25" to the outside, which equals about a 285 tire, which is 11.22" wide. So maybe a 10" wide wheel would look better? For the fronts, I like the 4.25" backspacing, but want an 8" wide wheel. Any other suggestions? ------------------ Formerly know as: "GMC Under Construction" Current project: 1967 GMC shortbed/fleetside, 350/700R4, air bag suspension. Other vehicle of interest: 1957 Chevy Bel-Air 4dr hard top, 283/powerglide, lowered 3-1/2" in front and 2 inches in the rear. Web Site: jaySpot.com AOL Screen Name: Slammed67GMC Location: Kansas City, MO __________________ Jason - '67 GMC swb \| '57 Bel-Air 4dr hardtop \| '56 210 4dr Wagon \| 2000 GMC Sierra

03-19-2002, 06:42 PM	#2
Slammed67 Progress = 0% Join Date: Nov 2001 Location: Kansas City, MO Posts: 2,108	ttt __________________ Jason - '67 GMC swb \| '57 Bel-Air 4dr hardtop \| '56 210 4dr Wagon \| 2000 GMC Sierra

03-19-2002, 07:31 PM	#3
ryan68 Certified Chevy Man Join Date: Jan 2000 Location: Tucson, Arizona, United States Posts: 2,053	Ditto on that. I want to run 18's and was thinking on a little more meat since my truck isn't as slammed as Smalled67. I want to run 255/55/18 fronts on 18x8's and 285/50/18 backs on 18x9.5's, I like equal height tires. I see a guy in Tucson, AZ that runs 18" Torque Thrust II's on 18x8 front with 18x9.5 rear with 255/50/18 fronts and 295/45/18 rears. ------------------ 68 Chevy CST (327,TH400) 3/5 drop 71 Suburban 4x4 (350,TH350) 33's Check out my web site!!! http://www.geocities.com/cst68chevy/ __________________ 68 Chevy CST (327,TH400) 3/5 drop lots of fun stuff 71 Suburban 4x4 (350,TH350) 7" lift 37's, D44/14 bolt and other sorts of goodies, lockers front and rear, flexes 40", 895 RTI score Check out my web site!!! http://www.geocities.com/cst68chevy/

03-19-2002, 07:54 PM	#4
Reumster L.E.D. Freak Join Date: Jan 2002 Location: Polson MT Posts: 1,358	A thing to consider is rotating the tires. You can't rotate tires if you run different size front and back. And most Low profile performance tires, are soft compound and wear fast. Also something to ask about when buying tires, is if they are for trucks, they do have differnt tires for cars and SUV/trucks ------------------ 1972 2wd Blazer, 350/700R4/3:73 posi/NOS. Power is nothing without control! __________________ Specializing in Custom L.E.D. inserts. http://www.ccled.com/ Contact me @ blazer2wd1972@hotmail.com (406)675-8082 or Joel @ jmcwaters@eps-corp.net 1972 2wd Blazer, 350/700R4/3:73 posi, err & Custom L.E.D. inserts! LOL

03-19-2002, 08:06 PM	#5
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	I used 17's on mine. They are 8" wide P235/60R-17. ------------------ Andy 71's Are for ever!!! or 67,68,69,70,72 http://geocities.com/chevy71tpi/main.html __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

03-19-2002, 08:08 PM	#6
Reumster L.E.D. Freak Join Date: Jan 2002 Location: Polson MT Posts: 1,358	yeah rear disk brakes got to have them with big wheels!!!! Whats's up with the painted wing windows ------------------ 1972 2wd Blazer, 350/700R4/3:73 posi/NOS. Power is nothing without control! __________________ Specializing in Custom L.E.D. inserts. http://www.ccled.com/ Contact me @ blazer2wd1972@hotmail.com (406)675-8082 or Joel @ jmcwaters@eps-corp.net 1972 2wd Blazer, 350/700R4/3:73 posi, err & Custom L.E.D. inserts! LOL

03-20-2002, 02:09 AM	#7
ryan68 Certified Chevy Man Join Date: Jan 2000 Location: Tucson, Arizona, United States Posts: 2,053	I am either running Nitto NT404's or Yokohama AVS's, so they are definitly rated for a truck and 149mph, hehe. ------------------ 68 Chevy CST (327,TH400) 3/5 drop 71 Suburban 4x4 (350,TH350) 33's Check out my web site!!! http://www.geocities.com/cst68chevy/ __________________ 68 Chevy CST (327,TH400) 3/5 drop lots of fun stuff 71 Suburban 4x4 (350,TH350) 7" lift 37's, D44/14 bolt and other sorts of goodies, lockers front and rear, flexes 40", 895 RTI score Check out my web site!!! http://www.geocities.com/cst68chevy/

10-13-2005, 11:40 PM	#8
slammed69 Registered User Join Date: Oct 2005 Location: louisville kentucky Posts: 3	the hell with 18" go with 20s they look good on mine.

10-13-2005, 11:47 PM	#9
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,071	Geez . . .... This one has a little dust on it . __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

10-14-2005, 05:17 AM	#10
Rooster's 67 Registered User Join Date: Sep 2003 Location: DFW Posts: 765	scott, I have to agree, very old thread considering the amount of discusions already had on the subject. __________________ The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?

10-14-2005, 08:32 AM	#11
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Do some research. You will find a much better selection of tires in 20's than you will in 18's. Your better off going with 17's or 20's if you want the same size wheel all around. If your going to stagger the sizes then 18/20 is the best looking combo and you can find decent tire sizes for the rear.... __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"



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