you mean is it too wide to fit down the trails?
There are some MX focused trails around here that I can fit down but its slow going and a lot of rubbing the roof on the trees if its of camber.
On ATV/SXS trails no, no problems. Its short enough that I can go anywhere a 2up 800/900/1000RZR can go. The Teryx is longer and "feels" wide for a 4 seater. and the Ranger Crew, well that school bus just won't fit down twisty trails unless its a Jeep width trail. The RZR 4s are way longer than the P4 (and 2x the price) and with a lift and tires the P4 has better capability to clear teeter totter type obstacles. @15" of ground clearance. You don't have the power of the RZR1000 and if you're above say 7000 feet the Pioneer gets short of breath for some people. All of the other choices are also a minimum of $3k more with most starting $5k or more higher than the P4.
Hope that helps.