What tire sizes everyone running with 20's - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**blazercrazy70** · 03-26-2014, 05:32 AM

Wondering what tire sizes anybody is running with 20's all the way around. I have 20x8.5 in front and 20x10 in the rear. Also what tire make have been looking at Toyo's. Just looking for some input if you have a pic that would be great too.

19GM71 · 03-26-2014, 07:31 AM

245/45/20 on 20x8.5 all around.

OARNGESI · 03-26-2014, 07:44 AM

245 45 front and 295 40 looks good

suspect · 03-26-2014, 10:26 AM

The tires I'm using are in my sig. If you're not running bags or 5/7 drop, I doubt you'd want tires as short as mine. Check out summit racing, they have good deals and free shipping.

sKnNyPpY · 03-26-2014, 11:14 AM

275/45 Falkens on 8.5 x 20 all around. 2 1/2" spindle 1" spring in front 6" rear flip.
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oletimer72 · 03-26-2014, 11:32 AM

245/40/20 front ...295/40/20 rear.. Name: 1780630_3974079768480_1819190209_n.jpg
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crawdadfox · 03-26-2014, 02:07 PM

255/40/20 and 295/40/20.

TS6235 · 03-26-2014, 03:26 PM

245/45/20 275/45/20

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**jmking9** · 03-26-2014, 03:29 PM

Quote:

Originally Posted by crawdadfox

255/40/20 and 295/40/20.

I love that truck. I saved that picture a few years ago for reference when I got my tires. Mine is also 255/40 and 295/40 on 20x8.5 and 20x10 wheels.

Andy4639 · 03-26-2014, 04:39 PM

Here is my spec's.

**Bennett68C10** · 03-26-2014, 10:33 PM

I have 255/40/20 & 295/40/20, seems to be the popular size for 20's.

kxmotox247 · 03-26-2014, 11:01 PM

Was running 295/40/20 on the rear... switched to 295/45/20 for a little more sidewall. I ended up widening my wheel wells for a better fit. 18's on the front though.

ksbrktracer · 03-26-2014, 11:26 PM

We use Nitto NT420-S 255/40/20's and 285/40/20's on our customers trucks (fleetside with wide rear end and 5.50 BS 20X10 / 20X8.5 5.25 BS front) , make for some nice sizes. Nitto doesnt offer a 295/40/20 in the NT420-S or I would probsbly run them in the rear.

**blazercrazy70** · 03-27-2014, 04:37 AM

Thanks for the help guys. All the truck look awesome. Have to make a decision now

**CC69Rat** · 03-27-2014, 08:13 AM

I can tell you from experience, 295/45/20 is a little tight with a 20x10 and 5.5" BS on the wide rear housing. I guess it depends on how low you run it. I was at 6" spring and 2" block and it rubbed a little when turning into a steep driveway or the local burger joint if the entrance was at an odd angle. (Hard to describe)

Not sure on your backspacing but .. I'd suggest 255/40/20 and 295/40/20 as others have. Toyos are good looking tires. My next ones will be Toyos. (Proxes STII)

JointTech · 03-27-2014, 08:44 AM

275/55r20 Hankook

kxmotox247 · 03-27-2014, 09:22 AM

Quote:

Originally Posted by CC69Rat

I can tell you from experience, 295/45/20 is a little tight with a 20x10 and 5.5" BS on the wide rear housing. I guess it depends on how low you run it. I was at 6" spring and 2" block and it rubbed a little when turning into a steep driveway or the local burger joint if the entrance was at an odd angle. (Hard to describe)

Not sure on your backspacing but .. I'd suggest 255/40/20 and 295/40/20 as others have. Toyos are good looking tires. My next ones will be Toyos. (Proxes STII)

Yep. What he said. My 295/40/20's rubbed and I was running a (60" wide) camaro rear end which is more narrow than stock. I just swapped in a narrowed 9" (58") and widened my wheel tubs 1.5" to run my 295/45/20's. BFG KDW's . Its an awesome looking tire.

chevjayfsd · 03-27-2014, 12:50 PM

255/40 and 295/40. I think it's the best fitting/looking out there.

primetime · 03-27-2014, 01:24 PM

Quote:

Originally Posted by sKnNyPpY

275/45 Falkens on 8.5 x 20 all around. 2 1/2" spindle 1" spring in front 6" rear flip.
Attachment 1233231

i haven't seen this truck yet surprisingly, Columbia isn't but so big. nice truck

sKnNyPpY · 03-27-2014, 02:18 PM

Quote:

Originally Posted by primetime

i haven't seen this truck yet surprisingly, Columbia isn't but so big. nice truck

Thanks! I live in W Cola and used to own S &S Art Supply. You may have seen it sitting on State Street not moving until I bought her two years ago and started fixing her up. I should be at ProAuto's open house next Saturday on Gadsen St. if you want to chat.

*JonnyC10* · 08-23-2014, 11:05 PM

Quote:

Originally Posted by 19GM71

245/45/20 on 20x8.5 all around.

Is that dropped at all?

19GM71 · 08-24-2014, 10:51 PM

Quote:

Originally Posted by JonnyC10

Is that dropped at all?

Yes it is dropped 3 and 5. Springs up front and springs with 1 inch block in the back.

*JonnyC10* · 08-24-2014, 11:08 PM

Quote:

Originally Posted by 19GM71

Yes it is dropped 3 and 5. Springs up front and springs with 1 inch block in the back.

Pretty sweet. Did you have to do a c notch? I originally ordered a 3/5 drop from CPP and then they told me I would need a c notch if I went that route. So I went with the 2/4. Got the front done, and now got to do the back. I put one of my 20's on the front today just to see how it looked and now it doesn't look like I dropped it at all. I think the tires are too big. They are 275/55/20's. They came with the wheels when I bought them. I think Im digging your tire size. Do the tires appear too narrow for the 8.5" wheels or anything? Maybe I should do 275/45? IDK. LOL. Kinda stuck on what to do for tires.

19GM71 · 08-25-2014, 07:09 AM

Quote:

Originally Posted by JonnyC10

Pretty sweet. Did you have to do a c notch? I originally ordered a 3/5 drop from CPP and then they told me I would need a c notch if I went that route. So I went with the 2/4. Got the front done, and now got to do the back. I put one of my 20's on the front today just to see how it looked and now it doesn't look like I dropped it at all. I think the tires are too big. They are 275/55/20's. They came with the wheels when I bought them. I think Im digging your tire size. Do the tires appear too narrow for the 8.5" wheels or anything? Maybe I should do 275/45? IDK. LOL. Kinda stuck on what to do for tires.

I did not c-notch it. I removed the bump stops and I have about 2 1/2 inches of clearance between the rear end housing and the frame rail. I have never bottomed out, but my truck is not used to haul anything but my butt. The dropped shocks that came with my kit are definitely stiff enough to help keep it from bottoming out.
The 245/45/20 is a stock tire size for the Dodge Charger (at least in 2006 it was) so I went with it so I could rotate them. On the Charger they used 9 inch wheels. I don't think the tires look to narrow on the wheels but I would not go any narrower though.
My 245/45 tire is 28.6 inches tall and 9.6 wide, and the 275/45 is 29.7 inches tall and 10.8 wide. 1 inch taller over all.
When I need new tires I probably will go with a 275/40 tire which is 28.6 tall but is 10.8 inches wide.
I hope this all helped your decision.

boraxman · 08-25-2014, 09:38 AM

255-40-20 all the way around

03-26-2014, 05:32 AM	#1
blazercrazy70 Senior Member Join Date: Sep 2006 Location: illinois Posts: 505	What tire sizes everyone running with 20's Wondering what tire sizes anybody is running with 20's all the way around. I have 20x8.5 in front and 20x10 in the rear. Also what tire make have been looking at Toyo's. Just looking for some input if you have a pic that would be great too.

03-26-2014, 07:31 AM	#2
19GM71 Registered User Join Date: Jan 2014 Location: Stigler,OK Posts: 125	Re: What tire sizes everyone running with 20's 245/45/20 on 20x8.5 all around. Attached Images

03-26-2014, 07:44 AM	#3
OARNGESI Registered User Join Date: Sep 2008 Location: CASA GRANDE AZ Posts: 4,227	Re: What tire sizes everyone running with 20's 245 45 front and 295 40 looks good __________________ 70 SWB STEPSIDE 70 BLAZER 09 challenger

03-26-2014, 10:26 AM	#4
suspect Registered User Join Date: Jul 2011 Location: oklahoma city Posts: 692	Re: What tire sizes everyone running with 20's The tires I'm using are in my sig. If you're not running bags or 5/7 drop, I doubt you'd want tires as short as mine. Check out summit racing, they have good deals and free shipping. __________________ Daniel 68 C10 Build http://67-72chevytrucks.com/vboard/s...d.php?t=503594 Romans 10:13 Everyone who calls on the name of the Lord will be saved.

03-26-2014, 11:14 AM	#5
sKnNyPpY Registered User Join Date: Sep 2012 Location: Columbia, SC Posts: 535	Re: What tire sizes everyone running with 20's 275/45 Falkens on 8.5 x 20 all around. 2 1/2" spindle 1" spring in front 6" rear flip. __________________ Life is too long to go slow... 71 GMC 1500 Super Custom LWB 350/350 AC(replaced w/vintage air)/PS/PB 2.5 CPP Spindle, 1" CPP Drop Spring, CPP Front and Rear Sway Bars/DJM Flip, new General Spring KC 5 spring pack, HEI /IntReg Alt 20x8.5 OldSkools 5" BS, 275/45 Falkens

03-26-2014, 11:32 AM	#6
oletimer72 Registered User Join Date: Sep 2008 Location: irving texas Posts: 82	Re: What tire sizes everyone running with 20's 245/40/20 front ...295/40/20 rear..

03-26-2014, 02:07 PM	#7
crawdadfox Registered User Join Date: Aug 2008 Location: New Orleans Louisiana.....a great place to visit but you wouldn't want to live here!!! Posts: 885	Re: What tire sizes everyone running with 20's 255/40/20 and 295/40/20. Attached Images __________________ Down......with the sickness!!

03-26-2014, 03:26 PM	#8
TS6235 Registered User Join Date: Feb 2014 Location: Marysville Wa Posts: 27	Re: What tire sizes everyone running with 20's 245/45/20 275/45/20 [/IMG] Last edited by TS6235; 03-26-2014 at 03:32 PM.

03-26-2014, 04:39 PM	#10
Andy4639 Orignal Goof member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 16,629	Re: What tire sizes everyone running with 20's Here is my spec's. __________________ 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.

03-26-2014, 10:33 PM	#11
Bennett68C10 Senior Member Join Date: Dec 2006 Location: Toms River, NJ Posts: 5,524	Re: What tire sizes everyone running with 20's I have 255/40/20 & 295/40/20, seems to be the popular size for 20's. Attached Images __________________ Keith 66 Suburban Burb Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=751361 IG: bennett68c10

03-26-2014, 11:01 PM	#12
kxmotox247 Senior Member Join Date: Jul 2002 Location: Champaign, IL Posts: 1,266	Re: What tire sizes everyone running with 20's Was running 295/40/20 on the rear... switched to 295/45/20 for a little more sidewall. I ended up widening my wheel wells for a better fit. 18's on the front though. Attached Images

03-26-2014, 11:26 PM	#13
ksbrktracer TNT-MOTORSPORTS Join Date: Mar 2008 Location: TULSA OKLAHOMA Posts: 2,705	Re: What tire sizes everyone running with 20's We use Nitto NT420-S 255/40/20's and 285/40/20's on our customers trucks (fleetside with wide rear end and 5.50 BS 20X10 / 20X8.5 5.25 BS front) , make for some nice sizes. Nitto doesnt offer a 295/40/20 in the NT420-S or I would probsbly run them in the rear. __________________ tnt-motorsports@hotmail.com TNT-Motorsports Tulsa Oklahoma website ....... www.tnt-motorsports.org facebook ...... https://www.facebook.com/TNTMOTORSPORTS1/ Tommy Lee 918-845-1935 AMERICAN Racing , BOSS , RACELINE , REV, RIDLER , ROCKET Racing ,US Mag , FOOSE , MCGAUGHY'S ,BELL-TECH , FESLER ,CPP , RIDETECH , ACCUAIR , BAER BRAKES , ETC .....

03-27-2014, 04:37 AM	#14
blazercrazy70 Senior Member Join Date: Sep 2006 Location: illinois Posts: 505	Re: What tire sizes everyone running with 20's Thanks for the help guys. All the truck look awesome. Have to make a decision now

03-27-2014, 08:13 AM	#15
CC69Rat Registered User Join Date: Jan 2011 Location: Chattanooga TN Posts: 5,921	Re: What tire sizes everyone running with 20's I can tell you from experience, 295/45/20 is a little tight with a 20x10 and 5.5" BS on the wide rear housing. I guess it depends on how low you run it. I was at 6" spring and 2" block and it rubbed a little when turning into a steep driveway or the local burger joint if the entrance was at an odd angle. (Hard to describe) Not sure on your backspacing but .. I'd suggest 255/40/20 and 295/40/20 as others have. Toyos are good looking tires. My next ones will be Toyos. (Proxes STII) __________________ Chad 1968 C10 SWB - 50th Anniversary Tribute Project http://67-72chevytrucks.com/vboard/s...d.php?t=444414 2017 Ram 2500 Crew Cab 4x4 6.4L (daily) 2001 Jeep Cherokee XJ 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)

03-27-2014, 08:44 AM	#16
JointTech Registered User Join Date: Feb 2012 Location: Mission Viejo, CA Posts: 1,856	Re: What tire sizes everyone running with 20's 275/55r20 Hankook __________________ 72 C20 Long Bed SB350 TH400 14 bolt rear end Extremely boring build thread



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03-27-2014, 12:50 PM	#18
chevjayfsd Project 7dos Join Date: Aug 2001 Location: Abilene, Texas Posts: 877	Re: What tire sizes everyone running with 20's 255/40 and 295/40. I think it's the best fitting/looking out there. __________________ 7DOS - 1972 C-10 350/350 Porterbuilt/Accuair 20x8.5/20x10 Ride Low or Die PSSST - Yes it's bagged. 7dos build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=610290

08-25-2014, 09:38 AM	#25
boraxman Keepin an eye out Join Date: Feb 2003 Location: So.Cal Posts: 3,915	Re: What tire sizes everyone running with 20's 255-40-20 all the way around __________________ 1970 Chevy C10 SWB 5.3 1996 Toyota Tacoma SR5 4x4 2007 Vespa GTS 250 Scooter ZIP 91351

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