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1254552

registered interest
date	23/11/2020
answering body	Department for Transport
answering dept id	27
answering dept short name	Transport
answering dept sort name	Transport
hansard heading	Large Goods Vehicles: Tyres
house id	2
legislature	25277 pref label House of Lords
question text	To ask Her Majesty's Government what estimate they have made of the number of goods vehicles which are taxed as private and not used commercially that could be affected by the ban on tyres aged 10 years and over.
tabling member printed	Earl Attlee
uin	HL10563
answer	answer is ministerial correction date of answer 07/12/2020 answer text <p>The Government commissioned fundamental research to understand whether the material properties of a vehicle tyre change with its chronological age to such an extent that the integrity of the tyre, and therefore its safety, is compromised. 44 used tyres were selected as potential test samples, ranging from 3 to 19 years in age and originating from in-service use within the UK vehicle fleet. However, 18 of these tyres exhibited evidence of physical damage, under-inflation, penetrations or repairs and were rejected from the study. The remaining 26 tyres were included, alongside five new tyres for comparator purposes.</p><p> </p><p>To limit the variability from differences in rubber compound, steel cords and construction, all the tyres selected were from the same manufacturer, and the same size and designated usage i.e. for front axles. However, three different tyre models were used, as no single model spanned the complete age range of the tyres selected for the study.</p> answering member printed Baroness Vere of Norbiton grouped question UIN HL10564 question first answered 07/12/2020 15:28:32 answering member 4580 label Biography information for Baroness Vere of Norbiton
tabling member	3425 label Biography information for Earl Attlee

1254553

registered interest
date	23/11/2020
answering body	Department for Transport
answering dept id	27
answering dept short name	Transport
answering dept sort name	Transport
hansard heading	Large Goods Vehicles: Tyres
house id	2
legislature	25277 pref label House of Lords
question text	To ask Her Majesty's Government when the Department for Transport and its agents undertook research into the longevity of the life of safe tyres on Heavy Goods Vehicles; how many tyres were (1) selected for, and (2) actually used, in that research; and what steps they took to ensure that their research used controls to allow for the possibility that any changes observed in tyre material over time could have been caused by changes in the mix of the compound used by the manufacturers and not by deterioration.
tabling member printed	Earl Attlee
uin	HL10564
answer	answer is ministerial correction date of answer 07/12/2020 answer text <p>The Government commissioned fundamental research to understand whether the material properties of a vehicle tyre change with its chronological age to such an extent that the integrity of the tyre, and therefore its safety, is compromised. 44 used tyres were selected as potential test samples, ranging from 3 to 19 years in age and originating from in-service use within the UK vehicle fleet. However, 18 of these tyres exhibited evidence of physical damage, under-inflation, penetrations or repairs and were rejected from the study. The remaining 26 tyres were included, alongside five new tyres for comparator purposes.</p><p> </p><p>To limit the variability from differences in rubber compound, steel cords and construction, all the tyres selected were from the same manufacturer, and the same size and designated usage i.e. for front axles. However, three different tyre models were used, as no single model spanned the complete age range of the tyres selected for the study.</p> answering member printed Baroness Vere of Norbiton grouped question UIN HL10563 question first answered 07/12/2020 15:28:32 answering member 4580 label Biography information for Baroness Vere of Norbiton
tabling member	3425 label Biography information for Earl Attlee