18'' or 20'' rear tires

[1fastR]

I have a set off 20x11-9 on the rear right now but was looking to get some 18's to replace them, what advantage would these have if any, I mostly ride trails, and gravel raods, nothing hardcore as far as mud riding or deep woods riding anymore sence I got my grizzly, I would by a tire package also that comes with rims and tires so I could swap them out with the 20's if I had to.

[cals400ex]

the 18's will make you loose ground clearance. also, they do not make the 18's as durable so they won't last as long. i guess you could even consider the 19 inch holeshot's. i like how they are lighter but i don't like how you loose the ground clearance.

[duke416ex]

Lighter, slide better, acceleration(same as lower gearing).

Main idsadvantage is the loss of ground clearance, but other than that just that most 18s are only 2 or 4 ply and punture easy in rough conditions. I love runnings 18's when playing, but I am just to rough on tires to run them all the time and they would kill me in the xc racing.

[goldrims04]

i had 18s w/ hole shots nice bottom end but i wore those tires out in a month and make sure u have skid plates or money to buy sprockits and roters

[bigrichards]

stick with the 20's bud. better ground clearance and more top end.
i just use 18's on my race bike,
but my trail bike i love the 20's
my 2 cnts:cool:

[CdaleXtreme]

18 inch tires aren good for much of anything but the track.

[tcr450r]

ya i just switched from my 18's back to my 20 stockers today. 18's arent as great as everyone was making them sound. They give you a little more acceleration, but its nothing that outstanding. The only thing i noticed was that i was getting blown away top end by my other 450 buds. I would go with 20's definitely, especially for trail riding because of the lose of ground clearance

[KRMit]

You sit 1" lower with 18"s. That's the advantage to MX. Stick with 20"s for trails.