Boss 338 Wheels **GROUP BUY** - The 1947 - Present Chevrolet & GMC Truck Message Board Network

smith2481 · 03-28-2010, 09:15 PM

I just ordered the 18s 18x8.5 up front and 18x9.5 for the rear my truck is lowered 2.5 up front and 4 in the back what size tires should I use?

70k52wd · 03-28-2010, 09:50 PM

Try to keep your tire diameter around 28-30in. I came up with 245/50 front 27.7in dia...
A 275/45 for the rear is 27.8in dia, But, imo it's not wide enough for the rim.

Boise69 · 03-28-2010, 10:38 PM

Quote:

Originally Posted by smith2481

I just ordered the 18s 18x8.5 up front and 18x9.5 for the rear my truck is lowered 2.5 up front and 4 in the back what size tires should I use?

This is the set-up I want (18x8.5 frt and 8x9.5 rears) but i dont see that as an option >??

BossHogg69 · 03-28-2010, 11:09 PM

the 18's only come in 8" or 9.5"

the 20's are 8.5" and 10"

Boise69 · 03-28-2010, 11:42 PM

Quote:

Originally Posted by BossHogg69

the 18's only come in 8" or 9.5"

the 20's are 8.5" and 10"

all right all right

i was justa wishin. i guess .5 wont kill me.

6D8_C10 · 03-29-2010, 07:29 AM

Quote:

Originally Posted by smith2481

I just ordered the 18s 18x8.5 up front and 18x9.5 for the rear my truck is lowered 2.5 up front and 4 in the back what size tires should I use?

I ordered the staggered 18x8 and the 18x9.5
I was going to order some 245/40s up and 295/35 in rear.

The 245/40 are real common. 295/40 are NOT common but 295/35 are. go figure. Most tire company recommend a 10in with for the 295s but I dont think .5" will make that big a difference.

gargenherder · 03-29-2010, 09:12 AM

Howdy, I just ordered the 20" 8.5 all the way round. I'll be dropping it 4" in front and 5" in the back with the ECE drop spindle kit. I was thinking of going 255/45 front and back? Is this going to work? Is there a better choice? I'd like to go wider in the rear, but I was thinking of the ease of keeping all four the same. Let me know what you guys think!

brossow · 03-29-2010, 09:18 AM

Quote:

Originally Posted by gargenherder

I'd like to go wider in the rear, but I was thinking of the ease of keeping all four the same. Let me know what you guys think!

"Ease of of keeping all four the same"? I don't understand. Once they're bolted on, where's the difficulty with staggered wheels? Pretty hard to get them mixed up.

gargenherder · 03-29-2010, 11:41 AM

Quote:

Originally Posted by brossow

"Ease of of keeping all four the same"? I don't understand. Once they're bolted on, where's the difficulty with staggered wheels? Pretty hard to get them mixed up.

I meant for ease of tire rotation. I guess its not a huge deal for me, but I drive a good bit and it would be help with tire life. But....nice fat 295's do look sweet on the back.

jz

TyKby2 · 03-29-2010, 12:22 PM

Quote:

Originally Posted by gargenherder

nice fat 295's do look sweet on the back.

I agree, the wider the better

BossHogg69 · 03-29-2010, 09:58 AM

Quote:

Originally Posted by 6D8_C10

I ordered the staggered 18x8 and the 18x9.5
I was going to order some 245/40s up and 295/35 in rear.

The 245/40 are real common. 295/40 are NOT common but 295/35 are. go figure. Most tire company recommend a 10in with for the 295s but I dont think .5" will make that big a difference.

245/40/18's and 295/35/18's look awesome together IMO. I ran that setup on my 5"/7" dropped '92 x-cab with Weld Wheels 18x8 front and 18x9.5 rear. The 295 was a bit of a squeeze on the 9.5" wheel, but it wore evenly and didn't look 'pinched' at the sidewalls. I ran Bridgestone Potenza SO2's and those are some of the best tires I've ever had.

03-28-2010, 09:15 PM	#1
smith2481 Registered User Join Date: May 2008 Location: Millwood, WV Posts: 119	Re: Boss 338 Wheels GROUP BUY I just ordered the 18s 18x8.5 up front and 18x9.5 for the rear my truck is lowered 2.5 up front and 4 in the back what size tires should I use?

03-28-2010, 09:50 PM	#2
70k52wd Blaze-Air Join Date: Nov 2008 Location: Virginia Posts: 1,117	Re: Boss 338 Wheels GROUP BUY Try to keep your tire diameter around 28-30in. I came up with 245/50 front 27.7in dia... A 275/45 for the rear is 27.8in dia, But, imo it's not wide enough for the rim.

03-28-2010, 11:09 PM	#4
BossHogg69 motor exploder Join Date: Mar 2009 Location: Pittsburgh, PA Posts: 2,346	Re: Boss 338 Wheels GROUP BUY the 18's only come in 8" or 9.5" the 20's are 8.5" and 10" __________________ Adam 1969 Chevy CST/10 stepside, DART Big M/TREMEC Magnum Extreme/3.73's w/Detroit Truetrac 1965 Chevy Bel Air Wagon (daily driver), 327/TH350,10 bolt w/3.08's 1961 Chevy Bel Air Sport Coupe, ZZ454/M21/9" rear w/3.50's & Detroit Truetrac 2005 GMC 1500 ccsb 2wd, 6.0L/4L65e/3.73 G80 2006 GMC 2500HD ccsb 4x4, DMax LBZ/Allison 6spd/4.56's w/Detroit TrueTrac Use the SEARCH function on this forum - it is your friend!!

03-29-2010, 09:12 AM	#7
gargenherder Registered User Join Date: Jun 2007 Location: Kennesaw, Georgia Posts: 7	Re: Boss 338 Wheels GROUP BUY Howdy, I just ordered the 20" 8.5 all the way round. I'll be dropping it 4" in front and 5" in the back with the ECE drop spindle kit. I was thinking of going 255/45 front and back? Is this going to work? Is there a better choice? I'd like to go wider in the rear, but I was thinking of the ease of keeping all four the same. Let me know what you guys think! Last edited by gargenherder; 03-29-2010 at 09:14 AM.



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