huskysled said:

To be honest you'd be better fitting a 185/50/15 to stop the speedo reading being illegal!
The law dictates that a speedometer must NOT read UNDER but may read OVER by up to 10%
The 195/50/15 tyre would make the speedo read under by 3.5%.
A 185/50/15 tyre will still read under but by only 1.7%
Ideally a 50 series tyre would have to have a width of 175 to be totally within the law.
Having said all that of course, I doubt whether speedo accuracy is going to be the main thing plod would be checking on a 100HP driven in anger in winter!

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you're forgetting the speedo isn't 100% accurate to begin with. cars normally leave the factory with the speedo reading a couple of mph under the actual speed to allow for changes to tyre's, wheels and to cover their own arses.

there's more than 1 recommended tyre size in the handbook.

Punto_Pete said:

you're forgetting the speedo isn't 100% accurate to begin with. cars normally leave the factory with the speedo reading a couple of mph under the actual speed to allow for changes to tyre's, wheels and to cover their own arses.

there's more than 1 recommended tyre size in the handbook.

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Other way around. Designed to overread by upto 10%

yes, sorry

mytyres.co.uk lists the following under winter tyres with steel rims for a 500 1.4 16V:

Vehicle make: Fiat [change]
Vehicle model: 500 1.4 16V [change]
Vehicle model: 312 1368ccm 74 kW BJ.: 09.2007- [change]

57 A Complete Set of Wheels
The rim Size Brand

complete wheel 14 inch

5½ x 14 4 x 98.00 x 58.00 ET: 35.00 4-4-hole steel wheel (6315)

Should fit the 100HP fine as ET is the only difference from the recommended winter tyre rim for the 100HP (see 100HP handbook) and just 3mm bigger for the 500. You may wish to go through some more models of cars (I tried a few Pandas and Puntos) to see if anything comes up with ET32 but ET35 should be fine (or phone them as they may be able to search by size instead of model over the phone). About £80 per corner + £10 delivery per corner. HTH.

u could always use 3mm spacers with the above to allow for the difference, but a difference of 3mm should be ok anyway

Most Easterly Pandas said:

Other way around. Designed to overread by upto 10%

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So does the same info as the speedo gets also apply to the mileometer i.e your car would have actually done 10% less total mileage than that showing on the readout.

Murano16v said:

So does the same info as the speedo gets also apply to the mileometer i.e your car would have actually done 10% less total mileage than that showing on the readout.

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An interesting point. On the old analgue cable driven units, I'd have thought yes, but on all modern cars it's all done electonically.

Having driven my sisters mk3 with Live Data Diagnostics running,I found it interesting that the speed read out on that was different to that being displayed on the speedo.

Upon running this with a GPS, the Live Data readout was the same as GPS. IE it was correct.

So the over-read is actually a software programme designed to add a % on I'd have thought, meaning that mileage readout should be accurate

Jon.

Actually on most cars, even with digital odometers, the data is still sent from a sensor that gets its information from the number of revelutions that the final drive is doing, ergo; the mileage on the odometer will be wrong by the same amount as the speedo. The only way really for even a digital system to be truly accurate would be by usine a GPS sensor. A few cars have these. Koennigsegg, Bugatti Veyron, etc, etc. Not really in our league due to cost constraints!

huskysled said:

Actually on most cars, even with digital odometers, the data is still sent from a sensor that gets its information from the number of revelutions that the final drive is doing, ergo; the mileage on the odometer will be wrong by the same amount as the speedo. The only way really for even a digital system to be truly accurate would be by usine a GPS sensor. A few cars have these. Koennigsegg, Bugatti Veyron, etc, etc. Not really in our league due to cost constraints!

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What you have said is compleatly different to what I've just said. Did you read my post? The software is designed to display a speed reading that is faster than what the car knows it is doing

Er, Yes I did! Did you read mine?
The odometer reading I was mainly talking about.

After a bit of searching this afternoon I think I may have found a solution, maybe lol

The problem with the steel wheels from the 500 and the Punto ect. is that the ET is quite a bit different from that of the standard 100HP alloy.

However I have managed to find a wheel that is pretty close.

Panda 100HP Alloy

6.5J x 15 ET30

Multipla Steel Wheel

6J x 15 ET31.5

So am I correct in thinking that this is the closest spec you can get?

S-X-I said:

Panda 100HP Alloy

5.5J x 14 ET32

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I take it you mean 5.5J x 15 ET32

Vredestein list a 14" winter tyre option on their site so I very much suspect you can put a 14" steelie on the 100hp. Consult your manual and it should confirm this or not.

If you have 14's you can fit Snowtrac 3's which is what I've fitted here on my 500 -> https://www.fiatforum.com/500/166084-winter-tyres-people-going-13.html?p=2365523

pdtrewern said:

I take it you mean 5.5J x 15 ET32

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Quoted the wrong figures, will edit post.

Yea, 14" is what's recommended in the handbook, that's why I only suggested this in my previous posts.
You can put winter tyres on the 100hp alloys but you won't find low profile winter tyres esp. in that size, so you'd be running a larger circumference tyre, which would fit but then you still have to get the tyres refitted to the rims twice a year unless you have two sets of 100hp alloys.

On the previous page I described an easy way to fit winter tyres to a 100hp...
https://www.fiatforum.com/panda/221560-winter-tyres-rims-100hp-2.html?p=2359468
https://www.fiatforum.com/panda/221560-winter-tyres-rims-100hp-2.html?p=2359578

You could also alternatively get 14" alloys, see my earlier post with tyresave description, etc.
https://www.fiatforum.com/panda/221560-winter-tyres-rims-100hp.html?p=2357850
https://www.fiatforum.com/panda/221560-winter-tyres-rims-100hp.html?p=2358114

I'd be wary of fitting ET35 rims to a 100hp. I'm sure the ET is 32 (different to other Fiat's) for a reason.

306maxi said:

I'd be wary of fitting ET35 rims to a 100hp. I'm sure the ET is 32 (different to other Fiat's) for a reason.

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ET on the 100HP alloys is 30.