Hey all,

Ive just had 2 new tyres (215/60/16H ER 30's) fitted at Bob Jane and they have advised me that due to my car being AWD, ALL tryes have to be changed to avoid voiding warranty. Possibly have to replace all even if you have 1 repaired! Something to do with less rolling distance which result in the diffs being effected.

Has anyone experienced this?

Sounds like a crock of S@#T to me, though I know range rovers have to change all tyres at same time.

KEG :nuts:

Hey all,

Ive just had 2 new tyres (215/60/16H ER 30's) fitted at Bob Jane and they have advised me that due to my car being AWD, ALL tryes have to be changed to avoid voiding warranty. Possibly have to replace all even if you have 1 repaired! Something to do with less rolling distance which result in the diffs being effected.

Has anyone experienced this?

Sounds like a crock of S@#T to me, though I know range rovers have to change all tyres at same time.

KEG :nuts:

dunno man, sounds like a sussness money making venture to me eh

Plausable however the drive bias varies so I'd have thought it should be okay.

being a LSD at the front and back, means there will be a certin amount of slippage between all wheels before you'd be wearing into it abnormally.

id tell him to go **** a range rover...

intresting about what your saying about that tho! - id hate to see a guy with 24" rims, and have to change all four incase you got a nail in one :redface: :rant:

intresting about what your saying about that tho! - id hate to see a guy with 24" rims, and have to change all four incase you got a nail in one :redface: :rant:

id like to see that... would be GOLD

An old boss of mine drove over a nail once in his STi.. he was complaining very loudly the next day that he had to go out and replace all four tyres as a consequence, so there may be some truth in it somewhere.

Call another tyre place and get a second opinion.

That sounds way dodgy....way way way dodgy...

Ring MMAL or your dealership and ask them about this affecting your warranty, I reckon its a load of BS personally :doubt:

Hu? Never heard of such thing. My kid bro does 4WD Calibra Turbos, need to check with him. But if u think logically, the car is always on uneven surface and more or less turning some ways and the wheels are turning with slightly different speeds ... I find this very hard to believe.

look at ur tread, if ur fronts are more worn then rears then why would u have to replace all four? replace the ones that are illegal, then when the other 2 get illegal replace them

dunno about warranty tho, why would it affect warranty, its a wear n tear part

Thanks for the input.
But sadly it's true. Sent a message to the factory techs and yes you must change them. It's even stated in the manual, under the driving section. Luckily I have a tyre guy who'll back date my purchase docket to the same date. The rears still have about 5000ks left on them.
Keg.

Thanks for the input.
But sadly it's true. Sent a message to the factory techs and yes you must change them. It's even stated in the manual, under the driving section. Luckily I have a tyre guy who'll back date my purchase docket to the same date. The rears still have about 5000ks left on them.
Keg.

Makes sense though, if the difference in rolling diameter is large enough it will cuase an LSD to constanlly compensate for the differance in torque loading between the connecting axles cuasing it to wear out quicker.

I guess you'll be rotating them a bit more often from now on to make sure all 4 are worn down at the same time........

daaaamn.....

thats complete bull****. If thats the case then how come you dont have to do it when replacing tyres on 4WD's, subarus and other AWD cars?? defently trying to scam you mate.. not only would i never go back their, but i would report him while your at it! The ACCC will be quite interested to hear about it

Thanks for the input.
But sadly it's true. Sent a message to the factory techs and yes you must change them. It's even stated in the manual, under the driving section. Luckily I have a tyre guy who'll back date my purchase docket to the same date. The rears still have about 5000ks left on them.
Keg.
I'm told the manual is over conservitive. I had that same question when I bought my AWD too when one of my tyres proved to be humming loudly the next day after coming home. The dealer agreed to replace only 2 tyres and we had a long drawn out discussion when I showed him what the manual said.

Anyhow I have to agree, there's no technical reason why replacing only 2 tyres is a no-no apart from the fact that on AWD's its good maintenance practice.

Oh and the less rolling distance bit, tyre air pressure including bumps, shocks and by virtue of the driver turning the steering wheel will make more rolling distance variation for all tyres than newer threads on tyres, which pale to insignificance with these factors.

:doubt: I think this needs some more homework done on it. Tyre dealers will be trying to make EVERY car a AWD if this is the case. I can understand Mitsu putting it in the manual to try and get themselves out of a warranty repair should one arise.

But still that makes AWD's very expensive if you happen to get a flat.

Oh and the less rolling distance bit, tyre air pressure including bumps, shocks and by virtue of the driver turning the steering wheel will make more rolling distance variation for all tyres than newer threads on tyres, which pale to insignificance with these factors.

If you constantly have one axle conected to a limited slip diff rotating faster than the other it will wear the diff quicker as it tries to compensate for the torque loading differance between shafts, not overnight but in the long run it does tend to quicken the wear and tear.

Weather Mitsubishi is being extra cuatious with the AWD or not I don't know, but it does make sense :P