2888501 - X50 TYRE WEAR

There is irregular wear of the tyres.

		Results of the tests
0	PRELIMINARY CHECKS	All OK	Problems met	Operation
	Check that all four tyres are the same size, type and are homologated	Continue to Step 1	Tyres different or not homologated	Replace the tyres involved
1	SHOULDER WEAR CHECK	All OK	Problems met	Operation
	Carefully examine the type of wear. The shoulders have worn quickly	Continue to Step 2	Inflation pressure too low	Restore the correct pressure; if necessary, replace the tyres involved
2	CENTRE AREA WEAR CHECK	All OK	Problems met	Operation
	Carefully examine the type of wear. The centre areas have worn quickly	Continue to Step 3	Inflation pressure too high	Restore the correct pressure; if necessary, replace the tyres involved Op.   4450B14
3	CHECK FOR PRESENCE OF CRACKS	All OK	Problems met	Operation
	Carefully examine the type of wear. There are cracks in the tread	Continue to Step 4	Inflation pressure too low or tyre is not the recommended type	Restore the correct pressure; if necessary, replace the tyres involved Op.   4450B14
4	CHECK FOR WEAR ON ONE SIDE	All OK	Problems met	Operation
	Carefully examine the type of wear. The tyre has worn quickly on one side only	Continue to Step 5	Front wheel geometry not correct	Check the wheel geometry: Op.   4450A10  . If necessary, replace the tyres involved
			Rear wheel geometry not correct	Check the wheel geometry: Op.   4450A40  . If necessary, replace the tyres involved
5	CHECK FOR THE PRESENCE OF INDIVIDUAL AREAS OF WEAR	All OK	Problems met	Operation
	Carefully examine the type of wear. There are individual areas of wear.	Continue to Step 6	Balancing not correct or tyre defective	Balance the wheels. If necessary, replace the tyres involved
			Front shock absorbers not working properly	Replace the shock absorbers involved Op.   4410A12
			Rear shock absorbers not working properly	Replace the shock absorbers involved Op.   4420A30
6	CHECK FOR PRESENCE OF WEAR "IN STEPS"	All OK	Problems met	Operation
	Carefully examine the type of wear. The wear is "in steps"	Continue to Step 7	Front wheel geometry not correct	Check the wheel geometry: Op.   4450A10  . If necessary, replace the tyres involved
			Rear wheel geometry not correct	Check the wheel geometry: Op.   4450A40  . If necessary, replace the tyres involved
7	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Search for the fault starting from another symptom'