Tires on a 4x4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Northbound · 01-01-2013, 06:42 PM

I'm replacing the tires on my '89 K2500 hd silverado. It currently has 245 75 r16, and I'm thinking of going to 285 75 r16 or 33x12.5x16. Anybody done this without a lift ... any issues?

95 S_Trucker · 01-01-2013, 07:08 PM

Yes. I did 285 75 16 on my 97 and 98 k1500 and currently on my 99k2500. The only issue you will have if any is the tire hitting the valance. Are are you using factory wheels
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Northbound · 01-01-2013, 07:28 PM

Yes the OEM steelies ... the valance ... that ruberrized skirt over the upper contol arm?

Northbound · 01-01-2013, 07:29 PM

Do you have a lift?

wwj75c30 · 01-01-2013, 07:36 PM

my dads 97 k1500 has 285/75/16s which come out to 33x11.50x16 no lift stock wheels it'll only rub lock to lock when flexing other then that they fit good

benoit454 · 01-01-2013, 09:54 PM

no valance is the plastic thing that's mounted under the bumper IF it's still there.

I run 285's on mine NO lift, and it's 1/2 ton 3/4 tons sit higher usually.

if you put them on and they rub crank up your torsion bars some. I know a guy who has a 2500 I think it is and runs 315/75-16's and it's aftermarket wheels. He had no lift only cranked his bars up some.

Northbound · 01-02-2013, 09:02 AM

Thanks Guys ... 285s are it then.

**special-K** · 01-03-2013, 11:12 AM

I just remove that valance piece. Mine re 3500s with torsion bars cranked. The one w/utility bed had 8" wheels. 315/75s would never work on these trucks. My 285s will very rub,rarely:

benoit454 · 01-04-2013, 06:36 AM

315's or 35's do work on these trucks seen it done over and over, 1500's 2500's even 3500's....

http://www.gmt400.com/forum/showthre...=badazzbulldog

I've seen 36's and 37's on some too, but I'm almost positive they fully cranked AND had to trim.

Northbound · 01-06-2013, 09:26 AM

My truck has no valance, don't think it ever did, but maybe the PO had taken it off. I've had two '89s, and neither had a valance, I know my old beater never had one as I got it of a 3 yr lease and it didn't have one when I got it with less than 40k on it.

In any case, a little rub will be ok as I don't really use this (newer to me) truck foe severe duty or off roading. I like the look of the bigger tires, and being an HD, it has a Turbo 400 with no overdrive and fairly low gearing in the rear axle (Dana 60 I think). It would also be nice to have the bigger tires for the rare occasion where I do need to go on bush roads.

Tks

tripleD · 01-07-2013, 09:17 AM

33x12.50x15s and no lift

01-01-2013, 06:42 PM	#1
Northbound Registered User Join Date: Mar 2008 Location: Ottawa Ontario Posts: 28	Tires on a 4x4 I'm replacing the tires on my '89 K2500 hd silverado. It currently has 245 75 r16, and I'm thinking of going to 285 75 r16 or 33x12.5x16. Anybody done this without a lift ... any issues?

01-01-2013, 07:08 PM	#2
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,187	Re: Tires on a 4x4 Yes. I did 285 75 16 on my 97 and 98 k1500 and currently on my 99k2500. The only issue you will have if any is the tire hitting the valance. Are are you using factory wheels Posted via Mobile Device

01-01-2013, 07:28 PM	#3
Northbound Registered User Join Date: Mar 2008 Location: Ottawa Ontario Posts: 28	Re: Tires on a 4x4 Yes the OEM steelies ... the valance ... that ruberrized skirt over the upper contol arm?

01-01-2013, 07:29 PM	#4
Northbound Registered User Join Date: Mar 2008 Location: Ottawa Ontario Posts: 28	Re: Tires on a 4x4 Do you have a lift?

01-01-2013, 07:36 PM	#5
wwj75c30 Registered User Join Date: Oct 2011 Location: oakdale ca Posts: 552	Re: Tires on a 4x4 my dads 97 k1500 has 285/75/16s which come out to 33x11.50x16 no lift stock wheels it'll only rub lock to lock when flexing other then that they fit good __________________ 75 c30 silverado drw 454/th400hd d70 soon to have d60 up front 73 c20 custom deluxe sm465 14bff parts truck

01-01-2013, 09:54 PM	#6
benoit454 Chris Join Date: Nov 2004 Location: Monaville, WV Posts: 3,737	Re: Tires on a 4x4 no valance is the plastic thing that's mounted under the bumper IF it's still there. I run 285's on mine NO lift, and it's 1/2 ton 3/4 tons sit higher usually. if you put them on and they rub crank up your torsion bars some. I know a guy who has a 2500 I think it is and runs 315/75-16's and it's aftermarket wheels. He had no lift only cranked his bars up some. __________________ Chris GIT R DONE!!!!!! Check out all our rides, http://www.cardomain.com/id/benwa454

01-02-2013, 09:02 AM	#7
Northbound Registered User Join Date: Mar 2008 Location: Ottawa Ontario Posts: 28	Re: Tires on a 4x4 Thanks Guys ... 285s are it then.

01-03-2013, 11:12 AM	#8
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,859	Re: Tires on a 4x4 I just remove that valance piece. Mine re 3500s with torsion bars cranked. The one w/utility bed had 8" wheels. 315/75s would never work on these trucks. My 285s will very rub,rarely: Attached Images __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

01-04-2013, 06:36 AM	#9
benoit454 Chris Join Date: Nov 2004 Location: Monaville, WV Posts: 3,737	Re: Tires on a 4x4 315's or 35's do work on these trucks seen it done over and over, 1500's 2500's even 3500's.... http://www.gmt400.com/forum/showthre...=badazzbulldog I've seen 36's and 37's on some too, but I'm almost positive they fully cranked AND had to trim. __________________ Chris GIT R DONE!!!!!! Check out all our rides, http://www.cardomain.com/id/benwa454 Last edited by benoit454; 01-04-2013 at 06:41 AM.

01-06-2013, 09:26 AM	#10
Northbound Registered User Join Date: Mar 2008 Location: Ottawa Ontario Posts: 28	Re: Tires on a 4x4 My truck has no valance, don't think it ever did, but maybe the PO had taken it off. I've had two '89s, and neither had a valance, I know my old beater never had one as I got it of a 3 yr lease and it didn't have one when I got it with less than 40k on it. In any case, a little rub will be ok as I don't really use this (newer to me) truck foe severe duty or off roading. I like the look of the bigger tires, and being an HD, it has a Turbo 400 with no overdrive and fairly low gearing in the rear axle (Dana 60 I think). It would also be nice to have the bigger tires for the rare occasion where I do need to go on bush roads. Tks

01-07-2013, 09:17 AM	#11
tripleD Registered User Join Date: Apr 2009 Location: newport,nc Posts: 234	Re: Tires on a 4x4 33x12.50x15s and no lift Attached Images __________________ triple d



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