Tire size vs. gear ratio

Stevec3201 · 01-30-2013, 02:59 PM

Does anyone here have a chart that shows different tire sizes and how they change the gear ratio. For example: My cart has a stock 12:1 rear end with 20" tires. How does the gear ratio change with every inch of tire height?

I'm looking to put on some 205/30/14 tires, but they are 18.84" tall and my current tires are 20". I will lose some top speed, but I can gain that back by changing the rear end gears.

Thanks,
Steve

trailmaster450 · 02-06-2013, 07:31 PM

hey bud. you could try doing high speed gears in your rear diff. 8.1 is an option for about 500-700.00 bucks...

Stevec3201 · 02-06-2013, 10:37 PM

Quote:

Originally Posted by trailmaster450

hey bud. you could try doing high speed gears in your rear diff. 8.1 is an option for about 500-700.00 bucks...

Ya, 8:1 is what is called for. You can find them on-line for around 300+. After I replace the wheels I will determine if I need those gears or not. I'll have to have a machine shop press them on for me, though.

1moretoy · 02-07-2013, 05:55 AM

Try this.

http://www.4lo.com/4LoCalc.htm

Stevec3201 · 02-07-2013, 07:15 AM

Quote:

Originally Posted by 1moretoy

Try this.

http://www.4lo.com/4LoCalc.htm

Thanks!

Goldcart · 06-12-2013, 06:08 PM

Can you email me
Coachjcherry at yahoo

Goldcart · 06-12-2013, 06:09 PM

That last post was to 1 more toy

01-30-2013, 02:59 PM	#1
Stevec3201 haveacupofshutthe****up Join Date: Jun 2011 Location: Viera, FL Posts: 739	Tire size vs. gear ratio Does anyone here have a chart that shows different tire sizes and how they change the gear ratio. For example: My cart has a stock 12:1 rear end with 20" tires. How does the gear ratio change with every inch of tire height? I'm looking to put on some 205/30/14 tires, but they are 18.84" tall and my current tires are 20". I will lose some top speed, but I can gain that back by changing the rear end gears. Thanks, Steve

02-06-2013, 07:31 PM	#2
trailmaster450 Not Yet Wild Join Date: Jan 2013 Posts: 2	Re: Tire size vs. gear ratio hey bud. you could try doing high speed gears in your rear diff. 8.1 is an option for about 500-700.00 bucks...
trailmaster450 Not Yet Wild Join Date: Jan 2013 Posts: 2

02-07-2013, 05:55 AM	#4
1moretoy Never really finished Join Date: Jun 2010 Location: Georgia Posts: 1,102	Re: Tire size vs. gear ratio Try this. http://www.4lo.com/4LoCalc.htm

06-12-2013, 06:08 PM	#6
Goldcart Not Yet Wild Join Date: Jun 2013 Posts: 2	Re: Tire size vs. gear ratio Can you email me Coachjcherry at yahoo
Goldcart Not Yet Wild Join Date: Jun 2013 Posts: 2

06-12-2013, 06:09 PM	#7
Goldcart Not Yet Wild Join Date: Jun 2013 Posts: 2	Re: Tire size vs. gear ratio That last post was to 1 more toy
Goldcart Not Yet Wild Join Date: Jun 2013 Posts: 2

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