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02' XR400 Largest Tire

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Hello All,

TWhat is the largest tire you have run on your XR4?

Stock Rear 110/100-18

Stock front ??/??-21

I have run 130/80-18 (130mm tall x 104mm wide)

I want to know about the 120/100-18 (120mm tall x 120mm wide)????

Also the 140/80-18 (140mm tall x 112mm wide)???

I think I have the #'s right.

The first # is the sidewall height and the second # is the % of the height that is the width. If I am wrong please correct me.

Anyway, if anyone has used these sizes please respond.

Thanks,

D

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Actually i think you got that backwards. ***/70-** means that the cross sectional height is 70% of the *** width.

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I always run a 110/100. I think this gives the best traction and also the best turning properties. I've ridden bikes with very large back tires and dont like it as much.

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Rear - Pirelli MT21 140, rode home at 40 mph for 25 miles, on road, after ripping out a tyre valve! O.K. in a straight line, made for some 'interesting' moments around sharpish corners though :banghead:

Just fitted a Pirelli Scorpion Pro on the Front, as recommended by the Master Mr. Dwight Rudder, strangely enough, noticed it was also a standard fitment on a friends brand new KTM525 (U.K.) too!

Hey! it aint what ya got, it's what ya do with it that counts.

I run about 6-10 psi in em too.

Hope ya stay upright....

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i've got an IRC vulcenduro rear thats 5.10" x 100 x 18 (same as 130.100.18) and it hooks up great and wears VERY long and is not an expensive tyre. i would recommend it fo shizzle.

some have mentioned using a 140, but noted that it rubs slightly on the stock muffler...not big deal. the 5.10" seems to barely graze the muffle as well. in america bigger is better for sure!

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I've run these sizes. Depending where you are riding, bigger is not always better. More weight = slower speed build up, slower shock action. Bigger = harder to spin the rear wheel and rear wheel steer.

Also, I have noticed the Kenda Milleville is much taller than the Trackmaster II.

Dunlop (stock)

Front: 80/100-21

Rear : 110/100-18

Kenda: 120/100-18

MT21

Front: 90/90-21

Rear : 130/90-18

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For trail riding and hill climbing I use a M5B IRC 140.It would not be a good track tire.I run 5 to 8 psi.00 xr 400 pumper carb,440,web cam,big gun pipe,air box mod.Ect

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