I have 5 BBS alloys, they have stamped on them 5 1/2 JX 14112 - 247ET42 they have Pirelli P6000 185/65 r14 with them. They are honeycomb affairs with a small 70mm (guess) cap. The caps are renault stamped. Looking on ebay I can get BBS replacement caps (carbon) for 32 quid which seems a tad steep, are there cheaper ways to replace these caps?
Alternatively should I look at larger rims (perhaps with low profile tyres)? How large can I go and what are the pro and cons?