Possible Clues:

• They go round on wheels
• Radials, in Reading
• "Riot on the ___" Medium 21
• They roll around in London
• Brits put them on their cars... 'cause that's just how they roll
• The Nits "Your Next ___"
• BFGoodrich products, in Britain
• Lorry bearers
• Radials for a Rolls, say
• Lay to rest without a lot of those spares synonymous with The Boot?