Burgerman wrote:Whatever rims you use they will need different axles/spacers/fasteners etc.
http://www.trampaboards.com/wheels-c-48.html all the top row, 7, 8 or 9 inch wheels are 4 inch diameter rims. But only the 3 spoke ones are really wide enough.
http://www.trampaboards.com/superstar-wheels-c-26.html metal centres, plastic rim, may be narrower...
http://www.trampaboards.com/9-inch-wheels-c-298.html plastic, should be same size / width as you use now. Maybe a fraction narrower but not enough to matter.
Thanks John, that's brilliant! They actually do all kinds of spacers etc too. I'll order what I need today, it also helps that they're really good value for money too! That's a really good find.