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Got home and the right drivers side wheel / caliper was scorching hot, compared to the others that were just warm. Just having my face next to it was hotter than my oven on full blast. 
If you know what you are doing you can fix it yourself and save a fortune. If the brakes are bad then a reconn'd caliper is a better ie longer term fix.allan welsh wrote:common problem with the brakes, either a piston has seized in the caliper or the slider pins have seized.
Just found a receipt and it seems the caliper was sticking last year, and Toyota took it apart, cleaned the pads / sliders and freed a piston for £45. In which case it's just a matter of jacking up the car, removing the wheel, then it's just the 2 bolts on the ends of the sliders (the ones you have to remove to change brake pads) - once removed just re-grease with a suitable lubricant (I use a high temperature LM grease).£50 per axle, and the pistons are around £10 each.
Once these things go bad it means stripping them every year to fix them. You can buy as suggested a kit and do it yourself but by the time you factor in all the faffing about, just buy a recon unit and swap the whole thing over in no time at all. You should certainly as JohnnyC suggests do the sliders but I thought it was a bit more involved including taking the carriers off. mk1 but the brakes are the same idea front and rear.James-UK wrote:Or would I just be best dropping it off at Toyota tomorrow and let them take it off and have a proper look at it?
No point in paying £70 or £80 per hour. Don't have the tools to attempt anything myself so I'll just get it done properly for piece of mind. Sadly there's no MR2 specialist in Plymouth. 
http://www.enginetuner.co.uk/home.htm 
Piston was sticking like it did last year. Should last a couple of thousands miles though, then I'll look at replacing it. 