Volvo "AWD"

[TheSurveyor]

Afternoon all.

In the final stages of buying a V60 D5 AWD.
Has anyone got any experience with the Haldex system these use? Do you have to replace all 4 tyres for example?

Thanks,

[anonymous-user]

Like all 4wd cars, you should avoid running with vastly different levels of wear front and rear, and tyres should be the same size as well!

[TheSurveyor]

That answers that then!

[Dave Hedgehog]

Max_Torque said:

Like all 4wd cars, you should avoid running with vastly different levels of wear front and rear, and tyres should be the same size as well!

that is utter crap

it is totally dependant on the 4wd system, many modern ones are far more tolerant than older systems, haldex does not care

the RS3 comes with different rolling radius and width front to back 255 F/225 R

[Krikkit]

Dave Hedgehog said:

Max_Torque said:

Like all 4wd cars, you should avoid running with vastly different levels of wear front and rear, and tyres should be the same size as well!

that is utter crap

it is totally dependant on the 4wd system, many modern ones are far more tolerant than older systems, haldex does not care

the RS3 comes with different rolling radius and width front to back 255 F/225 R

And yet, the Haldex in Freelanders is very susceptible to this.

[S10GTA]

TheSurveyor said:

Afternoon all.

In the final stages of buying a V60 D5 AWD.
Has anyone got any experience with the Haldex system these use? Do you have to replace all 4 tyres for example?

Thanks,

the old viscous coupling they used to use in the early 2000s had issues which meant tyres needed to be rotated. The newer haldex isn't anywhere near as susceptible.

[anonymous-user]

Dave Hedgehog said:

that is utter crap

Explain to me why it's crap, and i'll happily explain to you why it isn't!

[Mr2Mike]

Max_Torque said:

Explain to me why it's crap, and i'll happily explain to you why it isn't!

Why would a non-permanent 4WD system that doesn't use a viscous coupling be troubled by tyre wear? It'll only get activated in slippery conditions so transmission wind-up isn't likely to be an issue.

Genuine question BTW, I've not owned a Haldex equipped car so don't know the intricacies of the system compared to a simple viscous coupling.

Edited by Mr2Mike on Friday 2nd December 16:52

[Deerfoot]

As an aside, I've had my V60 D5 for just over a month and it's great.

[lostkiwi]

Krikkit said:

Dave Hedgehog said:

Max_Torque said:

Like all 4wd cars, you should avoid running with vastly different levels of wear front and rear, and tyres should be the same size as well!

that is utter crap

it is totally dependant on the 4wd system, many modern ones are far more tolerant than older systems, haldex does not care

the RS3 comes with different rolling radius and width front to back 255 F/225 R

And yet, the Haldex in Freelanders is very susceptible to this.

I always thought Freelanders used a VCD (viscous coupling)

[S11Steve]

I had the XC90 D5 for a 3 years - the front tyres would last 9 months, 12 at a push, the rears were never replaced in the whole time I had it. Never once was I told or warned about uneven wear, except that it was normal for them to chew through fronts.

[The Surveyor]

TheSurveyor said:

Afternoon all.

In the final stages of buying a V60 D5 AWD.
Has anyone got any experience with the Haldex system these use? Do you have to replace all 4 tyres for example?

Thanks,

My God, are you stalking me... first you take my user name and now your buying a V60, please don't tell me it's black

[cptsideways]

Any sensing wheel speed system relies on a difference in front to rear wheel speed to work. Good working 4wd systems (ie instantaneous) rely on a tight tolerance between the two. Poorer working systems are less tolerant tyre wear. Tyre wear can make a big difference in the operation of these systems.

Basic viscous systems (with or without a centre diff) in particular are very prone to overheating & seizing with different tyre sizes eg Freelander.

[surveyor]

S11Steve said:

I had the XC90 D5 for a 3 years - the front tyres would last 9 months, 12 at a push, the rears were never replaced in the whole time I had it. Never once was I told or warned about uneven wear, except that it was normal for them to chew through fronts.

Likewise with my XC60...

Although it is only Front wheel drive

[cptsideways]

surveyor said:

S11Steve said:

I had the XC90 D5 for a 3 years - the front tyres would last 9 months, 12 at a push, the rears were never replaced in the whole time I had it. Never once was I told or warned about uneven wear, except that it was normal for them to chew through fronts.

Likewise with my XC60...

Although it is only Front wheel drive

Uneven tyre wear F-R is a very good indication of a rubbish AWD system!

[surveyor]

cptsideways said:

surveyor said:

S11Steve said:

I had the XC90 D5 for a 3 years - the front tyres would last 9 months, 12 at a push, the rears were never replaced in the whole time I had it. Never once was I told or warned about uneven wear, except that it was normal for them to chew through fronts.

Likewise with my XC60...

Although it is only Front wheel drive

Uneven tyre wear F-R is a very good indication of a rubbish AWD system!

The modern Haldex systems are 2wd unless grip reduces. I'd suggest uneven try wear just means someone is not using the 4wd much.

[gazza285]

surveyor said:

S11Steve said:

I had the XC90 D5 for a 3 years - the front tyres would last 9 months, 12 at a push, the rears were never replaced in the whole time I had it. Never once was I told or warned about uneven wear, except that it was normal for them to chew through fronts.

Likewise with my XC60...

Although it is only Front wheel drive

So did my Volvo, turned out the front arms were worn, they appear to be lasting a bit longer now.

[Willy Nilly]

so many surveyors in one thread

[surveyor]

gazza285 said:

surveyor said:

S11Steve said:

I had the XC90 D5 for a 3 years - the front tyres would last 9 months, 12 at a push, the rears were never replaced in the whole time I had it. Never once was I told or warned about uneven wear, except that it was normal for them to chew through fronts.

Likewise with my XC60...

Although it is only Front wheel drive

So did my Volvo, turned out the front arms were worn, they appear to be lasting a bit longer now.

Nine months = 25k for me. Rear are still original with another 20k or so in them (now at 52K)

[Alucidnation]

I always thought this had more to do with permanent 4wd like earlier Quattros with Torsen system, and even then, they only suggested replacing in pairs.