tyre pressure monitor
 

can anyone tell me if a tyre pressure monitor works on 20inch wheels or only 18
or does it not bother which you use and is it a part or can you retrofit these ???

Tyre/wheel size/pressure don't matter as you do a calibration after adjusting tyre pressures. Not sure it's straightforward to retrofit though, at least not using factory parts. You can buy after market setups aimed at track day use which will give you actual tyre pressures in use

I'm sure IT will be along to advise on retrofit :)

Not 100% sure, but I thought there wasn't a TPMS option on the D2.

4 wheel tpm was available on d2 but it was rare

Retrofit not difficult to cobble parts together, but wheel sensors aren't cheap, then it's all wheel arch liners out to install aerials, and plus the control module to fit too

Personally I'm not a fan of it. Faced with a £100+ bill for a new sensor most people just turn it off to remove the annoying warning in the dis...