Remembered I dropped it off at MX5 restorers yesterday so it’s about 100 mile from home…the sun is out so guess I’m just looking forwards to having it back 
Finally managed to fix the seat adjustment lever plastic trim following months or fruitless searching for a replacement
….and fitted these chrome mirrors from Jass Perfrormance
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Took my Eunos for it’s MOT this morning, passed with no advisories again
Winter is officially over, the hard top is off and in the garage.
New chrome quarterlight trim this morning
finished off my BBR bits, complete exhaust , manifold through centre section to GT back box, compliments the remap carried out last week, 184 plus BHP and very smooth with it, the Eibach anti roll bars and Willwood 4 pot brakes help to slow it down, very pleased
More chrome today
Door handles
Corner reflector surrounds
I fancy some windscreen wipers next - however all I can find are the blade holders and not arms.
Fitted new front discs and pads (Brembo) and replaced the caliper slider pins. Also decided to remove the winter tyres (not much need for them this year) and put on summer rubber - this is where I ran into a problem. Just wondered if anyone else had encountered this. I have been using Goodyear Eagle F1s (Asymmetric 2) for the past couple of years and have been pleased with these. The 2 tyres I had been using on the front still had 4-5mm left so a had these put back on (on the same sides as before). The previous rears were getting past it so I had 2 new ones fitted. The F1 Asymmetric 2s are no longer available so had F1 Asymmetric 3s fitted - pretty much the same tread pattern, same size, loading, etc. Tyre pressures all checked and ok. On leaving the tyre fitters, I noticed the car felt a little bit unstable but then when going round a few sharpish bends with the power on (not that much), the traction control light flickered and the car felt very off balance as the system tried to come into play. I though it may be something to do with the new tyres having a protective coating on them but this continued over the next 50 miles and it happened in 2nd, 3rd and 4th gears - pretty off putting. As a test, I switched off the traction control and there was no slipping on bends so it looked like something with the tyre setup was causing the problem. I took the car back to the fitters and they switched the wheels - they put the pair with the slightly worn tyres on the rear and put the new ones on the front. Result - no issues with traction control and the car feels back to normal again. A bit strange but it looks like either the tread pattern was causing the traction control to think there was an issue or the slightly different front/back tread depth (and therefore wheel diameter) was fooling the system into thinking the wheels were losing grip. I’ll be monitoring this obviously - anyone with any ideas or experiences with similar issues?
Yep it’s down to tyre diameter the traction control system uses the abs sensors to work out if a wheel is slipping with different diameter tyres it thinks one set of wheels is turning faster than the other and as your smaller tyres are on the back it thinks they are slipping and as such it’s trying to control it
the old vauxhall calibra 4x4 wouldn’t drive if the tyres were different diameters due to the same issues
Cheers and thanks for your reply. It was very disconcerting having the traction control cut in for no apparent reason. Its something to remember for future tyre changes.
I have just taken delivery of my new bonnet struts to get rid of the current bonnet stay as its annoyingly fiddly to remove from the recess in the bonnet. will fit over the weekend
Had a go at this just,fronts done backs to do
Except he didn’t have the (very slightly) smaller tyres on the back - the worn ones were on the front when the issue arose…
I drove mine for the first time ever as I only just picked it up today!
its a 2.0 Sport Nav in Soul Red and I think I‘m in love
Pah! Lightweights the lot of ya!
Pretty much shelled out on the following:
All 8 wishbones
Droplinks
Anti roll bars
Discs
Calipers
Brake lines
Koni Street kit coilovers
Chassis braces
Shocker boots
No, it’s not an ND…calm down.
me bad miss read it either way a difference in diameter can cause issues and to a abs sensor 3 to 4 mm difference between new and his could be as much as 2 mph as the smaller tyres are turning faster to maintain the same travelling speed as the larger tyres
The traction control even takes into account the steering angle to assist in calculating if a wheel losing traction
Thanks for all the input. Did about 70 miles today and no problems with the tyres or traction control. Quite a lot of fairly enthusiastic cornering and no issues at all. The car also feels much more stable than it did when I was having the problem with the the traction control cutting in - prior to the issue being resolved, the steering was very light and ‘flighty’, even without the traction control cutting in. I’m certainly glad the issue was resolved pretty easily as it knocks your confidence in the car when you aren’t sure how it’s going to react in a corner. Still seems a bit odd that such a small difference in the tyre height front to rear would cause this problem so maybe there is a some other factor. The pressures were all ok, the tyres were all installed the correct way (and balanced) and there are no issues with wheel alignment, suspension, etc. The winter tyres that I took off had all been installed as a full set so were pretty worn at the rear in comparison to the front. Similarly, the Goodyears that I’ve used the past couple of years would have had a similar wear pattern so it’s the first time that tyres with the deeper tread have been on the rear. I know there are various thoughts about whether new tyres should be installed on the front or the rear but, in future, I’ll go with the former. In any case, it may not be an issue if all 4 tyres are exactly the same version, i.e., all Eagle F1 asymmetric 3s. Only time will tell but I’m glad the car is back to its normal good handling self. Cheers.
Good job, I did exactly the same with mine a few years ago (playing cards and a bit of garden hose) and now are due to be done again. Will have to wait for a bit better weather, as I have no garage to work in and some spare time. I used Autoglym wheel silver.
Replaced the standard Bose headunit with an Xtrons Android unit, very pleased all round. A few issues but all over come
You can easily get a much larger difference in rolling diameter by running a tyre 10% under-pressure - or even by simply carrying a heavy load in the boot. Neither of these situations will cause the traction control to react in the way described.
FWIW the TC on my NC flashes up at the slightest provocation (e.g. quickly cresting a hump-back bridge, moderate acceleration when negotiating a 90 degree junction, flooring the throttle in 3rd when overtaking) while running on (evenly matched, barely worn) Winter tyres but behaves itself properly when on the (half worn) Summer tyres. It’s all down to the grip and flexibility of the tread, not the rolling diameter.
Besides, if it really was down to differences in rolling diameter, simply swapping the tyres front to rear wouldn’t change the behaviour as the (small) difference in wheel rotation speed would still be present…?