Disc and tyre wear figures.

[Jazzyone]

Just had second service on my SR at 6500 miles. Had a look back to last years wear figures to compare disc/pad and tyre wear.
Interestingly front and rear brakes are showing 20% wear which is exactly the same as last year despite 3500 more miles! I live higher up so a lot of journeys out do need full braking not just regen. I do get some brake pad dust on wheels but nothing like previous non EV cars. So no change seems a little strange.
On the tyres, fronts had 6.5 and rears 6.0 last year(2800 miles)
This year fronts 5.0 but rears still 6.0. Strange that no wear shown on rears. Suppose it could be down to different technicians doing the measurements. Doesn’t bother me I’m just enjoying the car as much as ever.
One last thing, they also told me they had done the camera software upgrade. Only taken them a year!

[Lord Voltermore]

IIRC   the brake pad wear recorded on my two services included the mathematical symbol  <   meaning 'less than' 20% .    A main dealership will see enough Jazz ,on OE pads to be able estimate accurately if its  obviously somewhere less than 20% and the pads will last for a long time yet.The use of the < symbol  rather quoting an exact percentage suggests its normal Honda workshop practice. In reality they might have been for example only  5% last year and still only 15% this year.
They might only spend extra  time measuring them accurately  if its necessary to prove to a customer that replacement is due now, or soon, or they are an MOT failure.  Or they might just change the wear estimate to > x%   ( more than x% )  and recommend   replacement.   

Rear tyres last longer than front tyres. And  you can get variations in tread depth depending on how hard you press the  gauge against the rubber and which part of the tread you chose to measure. Especially noticeable on digital gauges  measuring to the nearest 0.1 mm

  . The V pattern treads on my All seasons  reduce slightly in depth as they meet the central  radial groove.  The radial groove and most  of the V groove is 8mm when new  but for about an inch either side of the centre groove the depth of the V groove starts to taper up  to less than 8mm. Probably to aid water expulsion. Thus for the centre 2" of the tread width you will have  a 8mm deep radial groove, but only about 6mm in the side grooves. rapidly increasing to 8mm.   A measurement in this area would give a false reading.  The inclusion of the 8mm groove in this area  maintains  a legal tread depth across the entire tread width, as equally well as sparsely grooved summer tyres.   

[Hicardo]

Interesting.  So a figure like <20% (using the less than sign) leaves us no idea how to translate into 'average' annual pad and disc wear.  I've done almost 30K in nearly 3 years.  Service booked in 2 weeks, so will be interesting to see what comes out in terms of brake wear.  My old hybrid Toyota Auris from 2014 at 6 years old with a similar-ish year on year mileage as the Crosstar, was still on original front pads and discs. 

[guest334]

Advice at a main dealer on wear condition is l
Often linked to their £ pocket.

[Farrow]

At my first service I was surprised that rear brake wear was listed as 30% given I do less than 10k miles a year and most of that in B mode. I'm not convinced how accurate the information provided is, and as olduser1 suggests, it would be to the dealer's benefit to report a higher figure.

[MRCLICKCLICK]

I ALWAYS ask for tyres to be rotated front to back on annual service.

[Nicksey]

I ALWAYS ask for tyres to be rotated front to back on annual service.

I have just asked my dealer to do this while they were replacing a wing mirror motor. They told me they don't bother doing it now, and wouldn't recommend doing it either.

[Jazzik]

I have just asked my dealer to do this while they were replacing a wing mirror motor. They told me they don't bother doing it now, and wouldn't recommend doing it either.

Your dealer is right!

Regardless of the drive type, we recommend not fitting the better tyres at the front, but always fitting them at the back.

https://www.uniroyal-tyres.com/car/service-knowledge/good-tyres-on-front-or-rear/

[aphybrid]

I have just asked my dealer to do this while they were replacing a wing mirror motor. They told me they don't bother doing it now, and wouldn't recommend doing it either.

Your dealer is right!

Regardless of the drive type, we recommend not fitting the better tyres at the front, but always fitting them at the back.

https://www.uniroyal-tyres.com/car/service-knowledge/good-tyres-on-front-or-rear/

Just looked at the reference to uniroyal above and here is copy of relevant section i think.
"To counteract uneven wear and to ensure that you can use your tyres for as long as possible, you should regularly change the wheels and swap the front and back tyres. As a general rule, this can be done every six months, i.e. in spring when swapping summer tyres with winter ones and in autumn when swapping winter tyres with summer ones. We explain when you should replace your tyres.

Make sure that you rotate the positions of the tyres when you replace them. You can do this while changing the winter tyres, for example. Rotate the positions of the car tyres at the front and back when you do this. Our tip: Before changing, write the previous wheel position on the tyre in chalk. This way you'll know the previous position of the tyres and where they should be moved to in the next seasonal change."

Seems to be a contradiction to not swapping front/rear?

[aphybrid]

From Michelan recommendations;
"When replacing just two tyres, Michelin recommends that the new or least worn tyres are fitted to the rear axle to improve vehicle control and safety. This advice applies to front and rear wheel drive vehicles fitted with the same tyre sizes front and rear." It goes on with illustrations showing how to swap wheels/tyres to even wear

This shown also in the Honda Jazz owners manual it contains under tyre maintenance the recommendation to swap wheels/tyres per the uniroyal quotation previously quoted.

I have always routinely rotated wheels/tyres to put best tread on my Hondas approximately every 3000 miles.

[Mr Onion]

I have instructed my garage not to rotate my tyres for years,

Many moons ago I saw a demonstration of the effect (Fifth Gear??)

Family car, 3mm fronts new rears, damp, road, car being driven normally round a corner and suddenly braking.

The car went straight to the scene of the accident.

Reversed the tyres and the car stopped normally.

QED

[Westy36]

I have always routinely rotated wheels/tyres to put best tread on my Hondas approximately every 300 miles.

Really? Every 300 miles? For me, that would work out at rotating them around 50 times a year!

I've never rotated tyres. When they wear out, they get replaced and new ones go on the rear.

[CB72]

I have always routinely rotated wheels/tyres to put best tread on my Hondas approximately every 300 miles.

Really? Every 300 miles? For me, that would work out at rotating them around 50 times a year!

I've never rotated tyres. When they wear out, they get replaced and new ones go on the rear.

Never ever rotated tyres on any vehicle I've had

[shufty]

...WRT tyres, I generally have 2 sets on the front for every 1 set on the back.

[aphybrid]

I have always routinely rotated wheels/tyres to put best tread on my Hondas approximately every 300 miles.

Really? Every 300 miles? For me, that would work out at rotating them around 50 times a year!

I've never rotated tyres. When they wear out, they get replaced and new ones go on the rear.

typo of 300 corrected to 3000