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Will a 4.50 x 18 fit on the rear? 2001 WR250F

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I just purchased a set of IRC TR8 tires and have been having second thoughts.......


On the Maxxis website:



Their tire converter seems to show that a 4.50 x 18 would work on my 2001 Wr250f which currently has a 110/100 x 18.


However I'm a little worried if it will be to wide or tall and will rub on the frame. 


Thanks for the help.

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This is from Rocky Mountain's website.

Dirt Bike tire conversion chart:

Metric          Inches

 70/100x17   2.75x17

 80/100x21   3.00x21

 90/100x14   4.10x14

 90/100x16   4.10x16

100/100x18   4.10x18

110/100x18   4.50x18

120/100x18   5.10x18

130/80x18   5.30x18

140/80x18   5.60x18

100/90x19   4.10x19

110/90x19   4.50x19

120/90x19   5.10x19

Edited by Talltexan

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