250-500cc Tyre size

Its time to replace the tyres on my WR250 2004 after a good run out last weekend. What size are you guys using? And what type? I currently have michellin maxis, 90-90-21 on the front and 140-80-18 on the rear. These tyres were on the bike when i got it so thought i would check with the guru's first.
Another thing is after actually having some good riding time on the beast i notice i'm struggling to reach the front brake and clutch levers so some pointers on a resolve for them would be great too....im about to do a search on this site on lever fixes now so appologies in advanced if its already on here.
Many thanks

the front is good but the rear tire is to big try 110 or 120 intermediate tire

don't forget all the different sizes seem to be inconsistent maker to maker, my Michelins were smaller than I thought they would be by designated size

I run a Pirelli XCMS 110/100-18 on back of my bike.

I use the Motoz tires, mine is a cr so I run a 19inch rear. As for levers. I have very small hands, I use a zeta adjustable lever on the front brake. The ktm brembo unit fits with a little grinding.

I run 90-90-21 and 120-80-18 perelli mx extra's no problems grip and these tyres are very predictable. I cant rally help with levers as the stock set up works good for me.

Michelin 140 is really a 120 in anything else because they measure to the outside of the knob where the others measure to the outside of the tire. On my 300 I run a an IRC m5b Rear at 140/80-18 (very wide good for mud/sand) and a 130/80-18 IRC m5b for everyday stuff and have a 120/80-18 Pirelli Extra for practice. Some like the Pirelli but I found its ok everywhere but not great at anything, it seems to handle rocks ok, thats why its a practice tire. As for the front I usually run the Pirelli xcms Mid-Soft and have been real happy with it but am trying the Bridgstone 59 (soft) or whatever it is this year as well.
I'm picking up a 165 soon and am running a 120/80-18 rear on that. my 2 cents

that IRC M5B 140/80-18 is my weapon of choice too, it does most everything well, hard pack is its Achilles, but mostly where I ride is soft, also had good luck with Michelin S-12 in the front

Thanks for the info guys...... Will get them ordered up tomorrow. No more excuses now for me falling off !

Are you telling me that there can be excuses for falling. It's not my fault? Can you give me a few, I just thought I sucked.

+1 on the M5B/S12 combo