Landracing Forum

Tech Information => Technical Discussion => Topic started by: fissionspeed on January 24, 2023, 04:52:11 PM

Title: Allowable stretch on front runners
Post by: fissionspeed on January 24, 2023, 04:52:11 PM
Hi all, I've gotten ahold of some M/T front runners to use on my car. The spec M/T lists for mounting them is a max 4 inch wide rim. However, the shop local to me (and comes well recommended on the forum) only carries minimum 5 inch wide barrels. Does anyone run this type of tire slightly stretched? Or should I pony up shipping for the 4 inch wides?
Title: Re: Allowable stretch on front runners
Post by: Stainless1 on January 24, 2023, 05:28:22 PM
Are these the 17 inch or the 15's.   I would say stick with MT, they made the tires.  When they spin fast, the tire will grow in size and try to pull off the bead... if the rim is too wide it might make it easier. 
:cheers:
Title: Re: Allowable stretch on front runners
Post by: fissionspeed on January 24, 2023, 05:49:40 PM
Quote from: Stainless1 on January 24, 2023, 05:28:22 PM
Are these the 17 inch or the 15's.   I would say stick with MT, they made the tires.  When they spin fast, the tire will grow in size and try to pull off the bead... if the rim is too wide it might make it easier. 
:cheers:

This is the 15 inch, 27.5 height
Title: Re: Allowable stretch on front runners
Post by: kiwi belly tank on January 25, 2023, 10:19:32 PM
Is a 15" donut spare rim an option for you?
I'm not ashamed to shop in the racing section of a junkyard. :|
  Sid.
Title: Re: Allowable stretch on front runners
Post by: jimmy six on April 11, 2023, 09:40:57 AM
I have different center pattern space save spare 15" rims. There are some at 3-1/2" but most are 4". Many have a negative offset which is fine for me. There are a few "high dollar" cars with welded forged aluminum ones.
Title: Re: Allowable stretch on front runners
Post by: vwpsycho on April 26, 2025, 09:54:43 PM
We?ve run 15? Goodyear Frontrunners (24?, 25? or 26?) on 6? wide wheels up to 245 mph since 2012