MOT pass!

Mike Trident · 4th August 2021, 10:38

Pleased that my 75 has passed it's MOT this morning, the tester even mentioning how good my car is.

What was mentioned, but no advisories was the slight cracking on the rear tyres. Not happy about this as these Avon tyres are probably only about 3 1/2 years old. I have read on here before about tyres cracking. You would expect them to last at least 6 years though wouldn't you? I like to change tyres after 6 years no matter what the tread depth is, but 3 1/2 years?

FLYING BANANA · 4th August 2021, 14:18

Congratulations on the pass

coolguy · 4th August 2021, 14:39

Quote:

Originally Posted by Mike Trident

Pleased that my 75 has passed it's MOT this morning, the tester even mentioning how good my car is.

What was mentioned, but no advisories was the slight cracking on the rear tyres. Not happy about this as these Avon tyres are probably only about 3 1/2 years old. I have read on here before about tyres cracking. You would expect them to last at least 6 years though wouldn't you? I like to change tyres after 6 years no matter what the tread depth is, but 3 1/2 years?

Do you paint your tyres? I am told it does help preserve them if they stand out in the open all year. I use Autoglym Rubber Plus (only available in 5 litre cans) - presumably for the trade. With a number of cars, I find it lasts about 2 years (costs around £39.95).

Perhaps your Avons were old stock when fitted? There should be a date on them.

roverbarmy · 4th August 2021, 15:11

The rubber aint what it used to be! Congrats on the pass. Plastics and "modern" rubbers are showing their age more quickly these days. If they outlast the warranty period, they seem to have done their job as far as the manufacturers are concerned.

Mike Trident · 4th August 2021, 16:10

I doubt painting the sidewalls would help, the cracking is in the centre bands. Unfortunately, a quick look on Google mentions this problem quite a lot.

The date on the tyres is showing they were only about a month old when fitted.

I do seem to recall reading something about tyres manufacturers not being allowed to use some raw materials anymore, and this is the problem. Probably soot, yes soot. Years ago my brother was a lorry driver. He used to pick up tons and tons of it from power stations and deliver it to a large tyres company.

2750 HP · 4th August 2021, 16:44

Possibly carbon black: see https://en.wikipedia.org/wiki/Carbon_black

Never heard of soot being taken away from power stations. Nearly all of milled coal ends up as ash which is /was usually pumped to massive land fill lagoons. Soot did I believe, collect on electrostatic precipitators prior to going up the stack and the rapping gear would rattle the wires etc and presumably the soot would fall into hoppers? Perhaps this is what you are referring to? Any ex CEGB on here please?

Some of my older tyres have the start of cracking and a garage said it may be down to sunlight? My day to day ZT never suffers from this as tyres replaced every couple of years through use.

4th August 2021, 10:38	#1
Mike Trident Posted a thing or two Rover 75 CDTi Saloon & Citroen C1 Join Date: Jun 2016 Location: Oakenshaw, Near Bradford Posts: 1,622 Thanks: 385 Thanked 552 Times in 328 Posts	MOT pass! Pleased that my 75 has passed it's MOT this morning, the tester even mentioning how good my car is. What was mentioned, but no advisories was the slight cracking on the rear tyres. Not happy about this as these Avon tyres are probably only about 3 1/2 years old. I have read on here before about tyres cracking. You would expect them to last at least 6 years though wouldn't you? I like to change tyres after 6 years no matter what the tread depth is, but 3 1/2 years? __________________ Rover 75 2.0 CDTi (131Ps) Conn SE Saloon. (Manual) 160 Remap, cruise control, electric window blind, temp gauge, Real walnut / ZT interior, FBH with GSM control. BORN Tuesday, 5th October 2004 @ 12:35:52 This vehicle was the 104,679th 75 to run off the production line, out of 112,381 This vehicle was the 3,318th 75 CDT Connoisseur SE (135) to be made out of 4,744 This vehicle was the 12,440th 75 in Starlight Silver (code: MBB) to be made out of 14,280 Starlight Silver 75s

4th August 2021, 14:18	#2
FLYING BANANA Moderator/Club Shop MG ZT 1.8t+. No.3 of 4 in Sunspot Yellow & Ford Fiesta in Black. Join Date: Aug 2010 Location: Rattler Farm Posts: 22,565 Thanks: 9,270 Thanked 15,645 Times in 6,806 Posts	Congratulations on the pass __________________ 233,431. That’s our second meet done, no.3 next weekend. onen hag oll

4th August 2021, 15:11	#4
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,050 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	The rubber aint what it used to be! Congrats on the pass. Plastics and "modern" rubbers are showing their age more quickly these days. If they outlast the warranty period, they seem to have done their job as far as the manufacturers are concerned. __________________ Oil in my veins!

4th August 2021, 16:10	#5
Mike Trident Posted a thing or two Rover 75 CDTi Saloon & Citroen C1 Join Date: Jun 2016 Location: Oakenshaw, Near Bradford Posts: 1,622 Thanks: 385 Thanked 552 Times in 328 Posts	I doubt painting the sidewalls would help, the cracking is in the centre bands. Unfortunately, a quick look on Google mentions this problem quite a lot. The date on the tyres is showing they were only about a month old when fitted. I do seem to recall reading something about tyres manufacturers not being allowed to use some raw materials anymore, and this is the problem. Probably soot, yes soot. Years ago my brother was a lorry driver. He used to pick up tons and tons of it from power stations and deliver it to a large tyres company. __________________ Rover 75 2.0 CDTi (131Ps) Conn SE Saloon. (Manual) 160 Remap, cruise control, electric window blind, temp gauge, Real walnut / ZT interior, FBH with GSM control. BORN Tuesday, 5th October 2004 @ 12:35:52 This vehicle was the 104,679th 75 to run off the production line, out of 112,381 This vehicle was the 3,318th 75 CDT Connoisseur SE (135) to be made out of 4,744 This vehicle was the 12,440th 75 in Starlight Silver (code: MBB) to be made out of 14,280 Starlight Silver 75s

4th August 2021, 16:44	#6
2750 HP Loves to post ZT CDTI, 190+, 260, Triumph TR4, Rolls Royce, Bentley and Mercedes E220d cabriolet Join Date: Feb 2014 Location: Little England Posts: 375 Thanks: 8 Thanked 72 Times in 46 Posts	Possibly carbon black: see https://en.wikipedia.org/wiki/Carbon_black Never heard of soot being taken away from power stations. Nearly all of milled coal ends up as ash which is /was usually pumped to massive land fill lagoons. Soot did I believe, collect on electrostatic precipitators prior to going up the stack and the rapping gear would rattle the wires etc and presumably the soot would fall into hoppers? Perhaps this is what you are referring to? Any ex CEGB on here please? Some of my older tyres have the start of cracking and a garage said it may be down to sunlight? My day to day ZT never suffers from this as tyres replaced every couple of years through use.