Might be stating the obvious (to some) but something I didn't realise until I started trying to pick tyres for aftermarket wheels is that the profile figure - e.g. 40 - is 40% of the width.
So for a 255/40/17 tyre - diameter is 255mm, profile / side wall is 102mm (40% of 255), and radius is 17inches.
Learning this made it all make a lot more sense to me. I also have this graphic to refer to. Can't recall where I found it but it's now saved on my desktop!
I also wanted a chunky looking tyre with a solid side wall and after going 245(F) / 265 (R) , have since switched back to 235(F) / 255 (R) as I found the handling was noticeable more boggy and I use the car for fast road and track use. For ref, these tyres are on 18" BBS LMs.
By
sumshiftyguy ·
Not off a Z hence why I thought I'd post here.
It's off a 92 peugeot 205 1.8 diesel.
Done some research online and the consensus seems to be that the best way to test a coolant sensor is to measure the resistance with a multimeter.
Video of soime chap doing it here:
From what I can make out, I should be testing the resistance across the two pins on the back of the sensor.
When I took the sensor out the car and did this I got no result, zip. Aha I thought it's bust! Bought a new one but that does the same :blink:
After poking around a bit I found I can get a measurement if I touch one of the pins and the brass casing.
Does this sound right or are both my sensors bust?
When my multimeter leads are not in contact with anything they show the same as the top pic e.g. '1'
Pics of what I am doing here: