[misterclean59]

Some of know that I put a set of tires and wheels from a new Foreman on my Rancher recently. I was concerned about it being too top heavy but it turns out that wasn't a problem however I did comment about my 2nd gear now being a little too tall now when it used to be perfect for climbing difficult hills. I also commented on how the new tires seemed to be stretched which also compounded the problem. Well , dummy me found out the problem. It seems that I looked at the metric side of the air pressure gauge that came with the wheeler. Wanting 3.5lbs I ended up with around 6 or seven ( not exactly sure) in actuality. So, upon discovering this the other day I promptly corrected the error and I'm very pleased to say that my usable 2nd gear is back!!!!! There is a small noticeable change but the torque is more than sufficient to compensate. I'm very happy now.......it was so bad I was considering going back to the smaller tires and wheels.

 

[fishfiles]

I run 10 psi in mine

 

[TBRider]

I run about 10-12 psi in the winter and 6-8 psi in the summer.

 

[_Wilson_]

I run 10 in front <makes the steering so much easier! and 2.5 in the rear makes for a softer ride

 

[misterclean59]

I've found that the ride becomes exponentially smoother with lower air pressure. Below 3 psi the steering effort isn't worth the the plushness plus the ride is very vague when above around 10 mph. Years ago when I took my ;young family then, on our first vacation with a four wheeler my two daughters complained of the rough ride on our Yamaha timber wolf 250. Knowing air pressure was crucial on my yz 250 I set off to find the ultimate air pressure. I'm not sure of the psi when I started (maybe 10 or 15 lbs.?) , I noticed basically no change as I lowered the pressure in half pound increments. I remember around 5 or 6 psi it started to become plush. Not knowing when this would stop I determined to complete this experiment until it got too soft then go back up. I noticed (on rocky roads and poor suspension) That the ride quickly got plush at 4 psi, plusher at 3.5 and plusher still at 3 psi. 2.5 was sluggish. I don't remember if my young daughters picked 3 or 3.5 psi as their preference but I do remembering my lesson learned on plushness of ride and psi. When I finally bought my first new wheeler it had an owners manual. It was a 2008 420 solid axle with poor suspension. The manual said 2.9 psi! This corresponded to my previous conclusions years before. So I now keep my 2014 trx 420 at 3 to 3.5 psi........it's noticeably smoother on rough terrain. Occasionally I may put 6 psi for racing around on smooth ground but I always settle back into the low pressures.

 

[Jeepwm69]

Good info misterclean!

 

[SamUK]

28x9-12 mega mayhems I run 8 up front and 4 in the rear. I used to run 3 all round but popped a tyre off the wheel when I had this set up on my 300.
Never had an issue with steering, mainly because of the lack of rubber that is in contact with the ground, their easy to steer anyway lol