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S60 & V60 '11-'18 / XC60 '09-'17 General Forum for the P3-platform 60-series models |
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Xc60 TyresViews : 462 Replies : 10Users Viewing This Thread : |
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May 6th, 2024, 15:36 | #1 |
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Xc60 Tyres
Quite by chance noticed today the tyres on my fwd 2015 xc60 are different front to back
235/65R18 on the front to 235/60R18 on the back , can only assume previous owner was told by the fitters this was ok Anyone have a view please ? |
May 6th, 2024, 19:23 | #2 | |
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Quote:
Your rolling circumference is going to be greater on the front. Could put your speedo out. |
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May 6th, 2024, 19:25 | #3 |
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FWD , 235/65R18 on the front , 235/60R18 on the back
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May 7th, 2024, 13:13 | #4 |
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It's not factory (all tyres were same size) but it's not illegal or dangerous either, as long as the tyres are match on the same axle and do not foul the bodywork or chassis.
As said above, if the larger tyres are on the front it will make your speedometer read less.
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May 7th, 2024, 14:57 | #5 |
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My understanding is that this would be illegal. Speedometers may over-read (ie indicate you are going faster than you actually are) by something like 5% (might even be 10%, I'm not certain) but may not under-read at all (ie indicate you are at the speed limit, whereas you are actually speeding). That is one reason why so often you see cars driving at a few mph below the speed limit - car manufacturers err on the safe side, and routinely slightly over-read, so the driver often assumes incorrectly that he/she is driving at the limit whereas in fact is driving below it (easily checkable with a GPS on a straight and level road). You should ensure the tyres on the front are no larger than whatever the car is meant to have per the owners handbook.
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XC60 D5 AWD (2015) |
May 9th, 2024, 11:57 | #6 |
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May 7th, 2024, 14:54 | #7 |
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