Suggestion re: proper inflation.
Tire sidewalls will usually state air pressure required for maximum load carrying capacity per tire. Usually, your total weight including passengers, fuel, battery, golf clubs, etc. will be less if the tires are the appropriate load range for your vehicle. So how do you know what psi to inflate to?
What I do, at least with automobiles, is to look at the "dirt track" that will show on the tire treads when rolling the car on a smooth surface such as a paved or concrete driveway or parking lot. Best bet is to take an old rag and either wet it or put some mild cleaner on it to clean some amount of the tread surface on all 4 tires. Then drive/roll the car forward, enough for the dirt on the hard surface to get the tread dirty. Keep the steering wheel going straight. The dirt should extend right out to the edges of the tread. It should not cover less (indicates over-inflated) or more, wrapping around to the shoulder of the tire (indicates under-inflation). Front and rear tires might need different pressures based on how the vehicle weight is distributed.
That's the only way I know how to get it right!
Might be some other ways as well. And check your air pressure as the outside air temps change. The formula is something like your tire air pressure will increase 1 psi for every 9 degree F in temp increase. Conversely, it'll drop 1 psi for every 9 degrees the temp drops.
Bill