Ez-Go 2five power upgrade

[Jgraham37128]

Will 205/30-14 work?

Found a set on eBay. Owners says will work but I want to make sure.

[kernal]

Tire size calculator here: https://tiresize.com/calculator/
You can compare sizes to Bob's recommendations.

[Jgraham37128]

Link. Not for golf carts

[kernal]

doesn't matter. with 14" wheels you won't be using turf tires

[usgicollector]

Originally Posted by Jgraham37128

Will 205/30-14 work?

Found a set on eBay. Owners says will work but I want to make sure.

Those tires are 18.84".

Hey Jgraham37128, Bob is going to get on this thread later on today and communicate with you that way because doesn't pm.

[kernal]

OK maybe some confusion here. At the top of page it says no tires available in that size. You just want to use the calculator which will let you compare tire size dimensions. If I plug in the tires on my RXV (220/40-14), the actual dimensions of the tires match the dimensions stated by the calculator.

[Jgraham37128]

Originally Posted by kernal

OK maybe some confusion here. At the top of page it says no tires available in that size. You just want to use the calculator which will let you compare tire size dimensions. If I plug in the tires on my RXV (220/40-14), the actual dimensions of the tires match the dimensions stated by the calculator.

Got it. Nice link to show the size difference

[BobBoyce]

Actual true tire size can vary by +/- 1" from the advertised specs with most golf cart type tires, china quality at its worst!

[Pickensmd]

Originally Posted by kernal

Bob did mine with original Curtis 235A controller (in pic) back in Nov of 2018. He did it in person which I recommend if possible. This is not just about top speed. He can tailor accel, speed, regen to your liking. The cart "drive-ability" is much improved.
So, this is a 32mph cart now on the level and I've seen 36mph+ on a slight decline. Acceleration is good right up to 32 and repeatable even after significant battery use. Cart is the same after 18 miles on the charge as it is right off the charger. (haven't tested at more than 1. Cart is as stable at that speed as it is at 15mph. Alignment is important. Still climbs hills as before the controller tune. No issues with malfunctions including parking brake. Range is the same as before the tune if you drive it the same way. If you spend a lot of time in the high 20s - 30s range will be reduced for sure. Current batteries (6x8v T-875s) are 4 years old and still supporting the carts performance as when new and after the tune.
If you can arrange for Bob to do this in person you get to meet him. Makes for a fun and interesting day

Thank you so much for your input! I did end up having Bob come out in person and turn the controller. I have a few questions regarding your carts and those speeds you listed. Have you upgraded to a set of 2G wires? Also, what size tires are you running?

I have not upgraded to 2G wires and I am running slightly worn (not much though) 215/35/14 (19.9”) tires. So...I do understand the wires will pull better current required for the motor and that 204/40/14 (20.5”) would get it moving quicker...BUT I am topping out at 25 mph on flat street. Am I missing something or would those two things really get me 7 mph more?

[kernal]

Cart has 225/40-14 tires. I run ~20psi.

Before Bob's tune it would run 22-24 with just the dealer unlock sometimes called "freedom" on those tires. These carts will run ~20 mph with the freedom unlock on standard stock 18" tall tires so the speed difference is all in the size of the tires.

Bob's tune resulted in 32 mph measured by GPS (more than one and they agree). That is on level pavement with just me on the cart. I have seen 36 mph on a slight downhill and I believe it would go faster at that location but I haven't pushed it and don't intend to. My experience is typical based on reports from others over the last year or two.

This cart was built to order on a 2012 chassis but everything but the chassis was brand new in 2016 including Trojan 8v batteries and all new 4ga cabling. I haven't changed to 2ga cables yet but I intend to sometime. I haven't had any issues with heat yet but in the environment the cart operates in the normal average speed is in the 12-15 mph range with only bursts into the 20s and above 25 is rare. I do punch it on occasion though and have surprised a few people in autos. I like to have this capability but actually isn't necessary for my use and can be dangerous.