'Give the customer the benefit of the doubt' . In reality it's they other way around after all the government won't accuse any tester for erring on the side of caution.
This tyre's nominal width is 205mm but this is rarely correct when measured. For the MOT test, your instruction is incorrect. You have to measure 75% based on the centre line of the actual tyre in contact with the road as evidential by the tread footprint wear marks. You must never use the size printed on the sidewall! Also,any tread near the outer edge of any tyre that is shallower than the central portion when manufactured, is discounted as tread, so this can be bald on a class 4, often up to the first circumferential groove!.. Refer to VOSA Inspection Manual at www.gov.uk . MOT Guide and Inspection Manual for Classes 3,4,5,7 Vehicles, Section 4.1 tyres (tread,pattern,breadth and width).
I think you're referring to what is called raised tread pattern. like the min depth mounds on some tyres have parts of the cut out section that are not as deep as others. You must always and only measure parts of the tyre that were cut to the maximum depth originally. I did say this in my video you probably missed it cuz I rambled a bit
what happens if the tyre is under-inflated and a NOMINAL (haha) 205/60/15 has 215mm touching the ground do you now over measure??? You don't do YOU. YOU just make up a width and PASS or FAIL according to friend or foe. I had a car go in your garage for test and have video proof soon to be published on youtube for all to see. I measure the tyre of four cars in you depot and sent one in myself. You are a hypocrite and fraudster.
Very detailed, albeit a bit dark. Well done. Excellent vid
Very helpful thanks
Very good video. Well done.
Thanks mate !
'Give the customer the benefit of the doubt' . In reality it's they other way around after all the government won't accuse any tester for erring on the side of caution.
interesting, thanks.
No worries
This tyre's nominal width is 205mm but this is rarely correct when measured.
For the MOT test, your instruction is incorrect. You have to measure 75% based on the centre line of the actual tyre in contact with the road as evidential by the tread footprint wear marks. You must never use the size printed on the sidewall! Also,any tread near the outer edge of any tyre that is shallower than the central portion when manufactured, is discounted as tread, so this can be bald on a class 4, often up to the first circumferential groove!.. Refer to VOSA Inspection Manual at www.gov.uk . MOT Guide and Inspection Manual for Classes 3,4,5,7 Vehicles, Section 4.1 tyres (tread,pattern,breadth and width).
I think you're referring to what is called raised tread pattern. like the min depth mounds on some tyres have parts of the cut out section that are not as deep as others. You must always and only measure parts of the tyre that were cut to the maximum depth originally. I did say this in my video you probably missed it cuz I rambled a bit
what happens if the tyre is under-inflated and a NOMINAL (haha) 205/60/15 has 215mm touching the ground do you now over measure??? You don't do YOU. YOU just make up a width and PASS or FAIL according to friend or foe. I had a car go in your garage for test and have video proof soon to be published on youtube for all to see. I measure the tyre of four cars in you depot and sent one in myself. You are a hypocrite and fraudster.
I haven't got a depot!
Just like the law on tires.
Or just invest in a tread width triangle !!
lol
your intention is right , but it s confusing!!
The 40 of 205/40/17 is not percentage it's the size, hence 40mm, if it were it would be about 8 to 8.5 cm high 😳
+chris kearney Nope the video is correct. It's the aspect ratio, which is a % of the tyre width. I know this comment was 8 months old but it's wrong.