Lifted Mini Truck With ATV Wheels (Hijet) 

I would think installing larger tires that are DOT rated would be a good idea.

@@2000freefuel - I'm not huge on certifications and regulatory agencies, but I would get DOT rated tires because almost all of my Hijet driving is on the road, and often at 60+ MPH. The issue with the larger diameter tires is gear ratio. Larger tires increase the effective gear ratio. The gear ratios were designed for the 23" tires. Larger trucks can have larger tires than the factory installed because they have the horsepower to utilize the larger gear ratio. On a 25+ year old mini truck, we probably have around 30-35 HP. Installing 25" tires increases the effective gear ratio enough that the engine doesn't have enough power to rev high enough to make full power in the highest gear. This becomes clearer if you look at the engine's HP vs RPM curve and then imagine the power requirement to overcome aerodynamic drag increasing with the square of the velocity (which is directly proportional to RPM). The engine output power curve crosses the aerodynamic drag curve before the engine produces peak power. If imagining the math doesn't work, imagine getting on a mountain bike and trying to ride up a steep hill in the highest gear. You don't make enough power to push that higher gear. The larger tires look a lot better IMO but I'd only install larger tires if I was using the truck exclusively off road, and maybe not even then. These little trucks do surprisingly well off road, other than deep ruts or tall obstacles. The small tires and limited articulation make kei trucks lousy rock crawlers, but if the rocks, roots and ruts are 6" or less, these lightweight little trucks are great climbers.

@@Liberty4Ever I'd try to find the closest common tire that can be made to fit.

@@2000freefuel - I bought a set of for Yokohama Geolander tires for my Hijet but haven't installed them yet. They were very reasonably priced and they shipped UPS Air from Japan for $370.58 delivered. That's $92.65 per tire. I wanted a set of five tires so I could change the spare and start anew for the truck's second life in the US but that 5th tire was going to cost an additional $202. The shipping jumped to a different tier. I think I can buy the same tire in the US for $149 delivered.

Add a leaf is a better option , blocks can sometimes cause wheel hop

If you go to the Mini Truck Talk forum, I posted a PDF that I created last night with all of the Hijet data excerpted from the Daihatsu spark plug chart, including the Hijet Atrai. My goal was to spend a few hours to translate it from Japanese to English, including converting the Japanese date codes to western year and month instead of a calendar based on the reign of Japanese emperors, so English speaking Hijet owners can quickly scroll through and find Daihatsu's spark plug recommendations.

The kyb is a higher quality strut than OEM , Bilstein is another high quality option,

I think his mom dropped him on his head

Lol I said the same ,he wasted about 100 zip ties lol

It won’t fit on the strut with the compressor

I doubt it's enough to bother it

Deez

Almost certainly less MPH. Larger wheels prevent the little 660 cc engine from revving out to reach the RPM needed for peak HP in high gear.

I get 120 mph easily but when I put my phone GPS at 100 km/h I'm only 45 mph, I think 🤔 it doesn't match mph and km/h This is my Speed Test ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4G7xw9d-tWs.html

Taller tires add top speed at the same RPM. A taller tire will have a larger overall circumference, causing it to need to travel more distance per revolution than the original equipment tire. You will loose acceleration but gain overall top end. Speedometer will also read slightly slower than actual speed.

4x110

Did u use wheel adapters all i find are 1" did u have any rubbin issues​@@jdmgems

We sell them if you would like one 😌

@@patrick67ss Where do I see the inventory?

We know these behave normally with engines located more over the rear axle because some of them are positioned in that way, so it’s got to be possible.