The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-24-2014, 01:06 AM   #1
blazercrazy70
Senior Member
 
blazercrazy70's Avatar
 
Join Date: Sep 2006
Location: illinois
Posts: 516
tire height

getting ready to order tires for my showwheels they are 20x10 in the rear and 20x8 up front looking for a tire that will fill the front up just looking for some tire sizes any recommendations I think I am going to run a 275/40 in the rear which is 28.7 inches tall did not know what the tallest I could put up front without any problems

Last edited by blazercrazy70; 03-24-2014 at 01:50 AM. Reason: change wording
blazercrazy70 is offline   Reply With Quote
Old 03-24-2014, 01:47 AM   #2
Already Gone
70+ ( Old Skool Club )
 
Already Gone's Avatar
 
Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,139
Re: tire height

That is not all you have to consider. if you dont want your front tires rubbing when you turn Your tread width, 50-60-70-75 and rim width are factors as well.
__________________
1972 C10 Custom/Deluxe 613 Highlander 406/700R4
1999 White Tahoe LS 4x2 with Z56 Police Package
1992 K1500 GMC Suburban

Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601

" Circumsatances Do Not Change Responsibility "

" The Sky is not the Limit, Your Mind is." Marilyn Monroe ..


RIP Charlie Watts 1941 - 2021
Already Gone is offline   Reply With Quote
Old 03-24-2014, 01:52 AM   #3
blazercrazy70
Senior Member
 
blazercrazy70's Avatar
 
Join Date: Sep 2006
Location: illinois
Posts: 516
Re: tire height

I was looking at a 245/40
blazercrazy70 is offline   Reply With Quote
Old 03-24-2014, 02:09 AM   #4
Vova
Registered User
 
Join Date: Aug 2012
Location: Los gatos ca
Posts: 1,299
Re: tire height

Are you stock or lowered? I run 245/40/20 on the front of my bagged truck without any issues.
Vova is offline   Reply With Quote
Old 03-24-2014, 02:15 AM   #5
blazercrazy70
Senior Member
 
blazercrazy70's Avatar
 
Join Date: Sep 2006
Location: illinois
Posts: 516
Re: tire height

I'm going to drop it 3.5 in the front with drop spindles and lowering springs. What are you running in the rear? Do you have any pictures with your set up
blazercrazy70 is offline   Reply With Quote
Old 03-24-2014, 02:19 AM   #6
Vova
Registered User
 
Join Date: Aug 2012
Location: Los gatos ca
Posts: 1,299
Re: tire height

Quote:
Originally Posted by blazercrazy70 View Post
I'm going to drop it 3.5 in the front with drop spindles and lowering springs
Might want a little taller tire to help fill the well. Or go lower...
Vova is offline   Reply With Quote
Old 03-24-2014, 02:30 AM   #7
blazercrazy70
Senior Member
 
blazercrazy70's Avatar
 
Join Date: Sep 2006
Location: illinois
Posts: 516
Re: tire height

thanks for the help
blazercrazy70 is offline   Reply With Quote
Old 03-24-2014, 07:47 AM   #8
19GM71
Registered User
 
19GM71's Avatar
 
Join Date: Jan 2014
Location: Stigler,OK
Posts: 125
Re: tire height

Quote:
Originally Posted by blazercrazy70 View Post
I'm going to drop it 3.5 in the front with drop spindles and lowering springs. What are you running in the rear? Do you have any pictures with your set up
Here is mine. 3" drop front, 5" drop rear, 20x8.5, 245/45/20 all around. No issues at all.
Attached Images
  
19GM71 is offline   Reply With Quote
Old 03-24-2014, 05:16 AM   #9
CC69Rat
Registered User
 
CC69Rat's Avatar
 
Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,210
Re: tire height

Measure the height of the truck prior to the drop.. maybe from the ground to the top edge of the fender lip. Then subtract about how low you want it to be.. 'Its here, but I'd like for it to be here'

That of course will be your drop but also remember your stock springs have likely sagged a little over the years. For example a 1" drop spring up front would likely not even drop your truck at all vs. the sagging stock springs.

What I'd suggest is measure, fender-to-ground compared to where you want it and add 1inch when you order your drop.

For your tires - width divided by 25.4 will give you inches. Say 255/40/20. 255/25.4 = the width of the tire overall. Now take this number and multiply by the aspect ratio. 255/25.4 * .40. This will give you the height of the sidewall. So, .. sidewall x2 plus the diameter of the wheel is the overall height of the tire.

275/40/20 = 10.826 " wide. 4.33" sidewall. X2+20 = 28.66

255/40 up front (?). 10.03 " wide 4.01" sidewall. 28.02" overall.

Your backspacing also makes a big impact on the overall fit and look of the wheels. What is the backspacing on the Show wheels?
__________________
Chad

1967 C10 SWB - Project Savannah - 6.0/4L80 *Currently underway*
1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy
1986 Silverado Short Fleet - Scarlet *Sold*
1985 Silverado Short Fleet *Sold*
2022 Jeep Gladiator Mojave
2001 Jeep Cherokee XJ 4x4 - Lifted, Built
1992 Jeep Cherokee XJ 4x4 - Lifted
2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)
CC69Rat is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:26 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com