Wives new car wheel size

[Dustydog]

Clive
A lot of tyres today are rotation orientated ie only in one direction. Presumably you do the rotation between front and rear same side? 😉

 

[otherclive]

Clive
A lot of tyres today are rotation orientated ie only in one direction. Presumably you do the rotation between front and rear same side? 😉

I don’t rotate in 2Wd cars irrespective of if the tyres are unidirectional or not. Always have best tread on the rear, again irrespective of FWD or RWD.

Now heading for bunker.

PS on AWD IE Haldex type I do same as 2WD. But in 4WD IE Subaru, Pajero, Disco I did rotate or move front to back and vice versa if unidirectional. But only on Subarau did I have unidirectional anyway.

 

[Buckman]

I don’t rotate in 2Wd cars irrespective of if the tyres are unidirectional or not. Always have best tread on the rear, again irrespective of FWD or RWD.

Now heading for bunker.

PS on AWD IE Haldex type I do same as 2WD. But in 4WD IE Subaru, Pajero, Disco I did rotate or move front to back and vice versa if unidirectional. But only on Subarau did I have unidirectional anyway.

That used to be true when car were rear wheel drive, but unsure if it applies nowadays. I prefer to rotate the tyres regularly for even wear and then to replace all four at the same time.

 

[otherclive]

That used to be true when car were rear wheel drive, but unsure if it applies nowadays. I prefer to rotate the tyres regularly for even wear and then to replace all four at the same time.

This link to Uniroyal gives a good summary. Others give similar advice and it’s independent of rwd, or fwd. Unless the driver is very skilled , few are, it’s better to reduce the risk of oversteer.

Good tyres on front or rear: Rotation and exchange according to plan

Changing and rotating tyres: Read on to find out why tyre rotation is important. And whether the good tyres should go on the front or rear.

www.uniroyal-tyres.com

 

[Dustydog]

That used to be true when car were rear wheel drive, but unsure if it applies nowadays. I prefer to rotate the tyres regularly for even wear and then to replace all four at the same time.

Sadly that’s not always possible nor necessarily desirable.

In my case two punctures meant two new rear tyres within four months. Both coincidentally are on the rear.
I now have almost brand new on the rear and 4 mm both front. They will not need changing at the same time.

That suits me. The new tyre in York in the Spring was £290. Back home 2 months later £220.

So you don’t need to be a mathematician to see how much four new tyres will cost😥.

 

[otherclive]

Sadly that’s not always possible nor necessarily desirable.

In my case two punctures meant two new rear tyres within four months. Both coincidentally are on the rear.
I now have almost brand new on the rear and 4 mm both front. They will not need changing at the same time.

That suits me. The new tyre in York in the Spring was £290. Back home 2 months later £220.

So you don’t need to be a mathematician to see how much four new tyres will cost😥.

My generation 1 Kia Sorento allowed a mismatch between front and rear tread depth. When in 4WD having a bit more tread depth on the rears reduced unnecessary power shuffling through its transfer box. But 4WD High or Low were only recommended for lower grip surfaces. So most of the time was spent in 2WD with the rears doing the work.

 

[Buckman]

Sadly that’s not always possible nor necessarily desirable.

In my case two punctures meant two new rear tyres within four months. Both coincidentally are on the rear.
I now have almost brand new on the rear and 4 mm both front. They will not need changing at the same time.

That suits me. The new tyre in York in the Spring was £290. Back home 2 months later £220.

So you don’t need to be a mathematician to see how much four new tyres will cost😥.

The last time I changed tyres on the Jeep the cost was for the four was in excess of £1200. The rear tyres which were Continental had good tread although they had seen 35k miles. They had been on the car since new. The front tyres were odd brands and one was almost new while the other showed wear. As I would needed to change the 3 tyres probably 6 months later I opted to change them at the same time as the front tyres.

I like the same amount of tread all round on a car to prevent any reaction between the two axles on an AWD or 4x4 vehicle!

 

[otherclive]

The last time I changed tyres on the Jeep the cost was for the four was in excess of £1200. The rear tyres which were Continental had good tread although they had seen 35k miles. They had been on the car since new. The front tyres were odd brands and one was almost new while the other showed wear. As I would needed to change the 3 tyres probably 6 months later I opted to change them at the same time as the front tyres.

I like the same amount of tread all round on a car to prevent any reaction between the two axles on an AWD or 4x4 vehicle!

Some AWD, as opposed to 4WD, such as the widely used Haldex are relatively insensitive to tread depth as far as interaction between the fronts and rears are concerned. My Volvo XC70 and Skoda Superb were both AWD Haldex systems as was my sons Freelander 2. This type of system does most of its driving through the front tyres until slippage is sensed on the rear, when some power shift then takes place front to back. Early generation Haldex were 90/10% front to rear then up to 50/50% when required. They were primarily mechanical operating on wheel slip. Generation 5 is still primarily front biased but takes inputs from wheel sensors, yaw sensors, ECU etc and can anticipate the need for power transfer more quickly than earlier generations. So this basically means that tyre wear in many AWD cars is very much like that in a 2WD car.