Lexus IS250 2006 Owner's Manual page 306

4-3. Do-it-yourself maintenance
NOTICE
Driving on rough roads
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Take particular care when driving on roads with loose surfaces or pot holes.
These conditions may cause losses in tire air pressure, reducing the cushioning abil-
ity of the tires. In addition driving on rough roads may cause damage to the tires
themselves, as well as the vehicle' s wheels and body.
Low profile tires and wheels
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Wheels with profile tires like 17- and 18-inch tires may cause greater damage than
usual to the tire wheel when receiving impact from the road surface. Therefore pay
attention to the following:
Be sure to use proper tire inflation pressure. If tires are under-inflated, they may
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be damaged more severely.
Avoid pot holes, uneven pavement, curbs and other road hazards.
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Failure to do so can lead to severe tire and wheel damage.
If tire inflation pressures become low while driving
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Do not continue driving, or your tires and/or wheels may be ruined.
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