Styling Maximum size on mags

[Hamsterjh]

Good day All,

I need some advice please, I would like to know what is the largest mags that any one were able to fit on a Fiat Uno. I would like to put 15 inch mags on my Uno, but do not want to spend 6 grand and then the mags are wrong.. Could anyone please give me some advise.

Many thanks,

 

[Jai]

15 by 6.5 fits fine:

just ensure your offset is good or you may need spacers, esp at the back where there's not much room to the trailing arm

you can, and people do go much bigger, but that will need a bit of bodywork

 

[Dunc Uno Turbo]

16x7 fitted here, arches rolled, lower front part of the rear inner arch knocked in slightly and theyre on

went for 16's as im running fiat coupe brembo front brakes

Dunc

 

[Chas Uno]

Don't forget that the tyre profile is also important. Asides from clearance issues you'll also bugger up the rolling radius unless you get it right. Also, unless you've got some power under the bonnet oversized wheels will kill your acceleration and most likely the diff too. Plus you'll get overtaken by milk floats! Not really worth going for 15's or higher unless you've got a turbo to start with.

 

[alexGS]

195/45 15 seems exactly the right size for the Uno Turbo - looks good, doesn't rub (or, doesn't rub any more than standard 13 wheels and 185/60 tyres), and the speedometer is accurate.

See http://www.carbibles.com/tyre_bible.html
Page 2 has a useful calculator where you can put in the standard-size tyre, which for the Uno Turbo is a 175/60 13. It calculates the rolling radius and circumferance on the left side. Then you can put in 195/45 15 on the right side, and end up with an answer that the 15" tyre is 3.02% bigger. Given that the speedometer is about 5% fast to start with, and the distance recorder is 2% fast, I find the 195/45 a satisfactory size.

-Alex

 

[rawill]

195/45 15 seems exactly the right size for the Uno Turbo - looks good, doesn't rub (or, doesn't rub any more than standard 13 wheels and 185/60 tyres), and the speedometer is accurate.

See http://www.carbibles.com/tyre_bible.html
Page 2 has a useful calculator where you can put in the standard-size tyre, which for the Uno Turbo is a 175/60 13. It calculates the rolling radius and circumferance on the left side. Then you can put in 195/45 15 on the right side, and end up with an answer that the 15" tyre is 3.02% bigger. Given that the speedometer is about 5% fast to start with, and the distance recorder is 2% fast, I find the 195/45 a satisfactory size.

-Alex

What a great tool!!
Thank you.

I have 175 70 13 on my Uno 70s.
I thought the original 155 did not fill the gap very well.

So I was going to put Punto 14 rims on and was going to put 185 65 14 tyres on. the speedo will be out a bit but never mind.

this tool lets me play with sizes to my hearts content.

Oh and my 175 70s do not rub anywhere.

 

[Dunc Uno Turbo]

whatever size you go for, i wouldnt go bigger than 16s. 17s are wayyyyyyyy to big for an uno, unless you have a horman kit, then u NEED them or the wheels will look lost!

Personally, i dont think my 16s are too big at all! As for killing acceleration, who cares in a 1.0L lol, not as if theyre at all quick in the first place!

once the 2.0L turbo's in, im sure 16s will be fine and i wont notice them

Dunc

 

[Chas Uno]

As for killing acceleration, who cares in a 1.0L lol, not as if theyre at all quick in the first place!

Maybe not, but a 1.0 litre FIRE Uno is surprisingly nippy up to around 30 - 40mph hence making them great town cars. Sticking oversized wheels/ tyres will lose that nippyness and the 'fun to drive' factor that small Fiats are known for.

 

[jo0lz]

Well.....
Here is another tyre calculator that I use
TyreCalcWebPage

I have 185/60/13s on old x1/9 rims, which from memory are 13x5j
This actually means the 185s are 10mm smaller diameter than 145s
Its totally a personal choice as to me this combination with a -35mm suspension drop suits the more Retro Style look of our Uno RaT

Slightly smaller circumference means the car is a tiny little bit quicker to accelerate
Obviously lost a bit of top end [not that we had much to start with!]
But thats no matter as on the motorway we drive the thing for economy
and usually stay around 60-65
as after all its an Uno 999 FIRE...not a rocket ship

All that said the 16's on Dunc's look great..
in a Euro Saloon Car Racer Stylie
especially as those Brembos fill the front wheels

It mght look a bit PanTs if you had 16's and had the puny standard brakes in there
especially the tiny rear drums

 

[Chas Uno]

I have 185/60/13s on old x1/9 rims, which from memory are 13x5j
This actually means the 185s are 10mm smaller diameter than 145s

Hmmm, I'm not at home so can't check my Fiat handbooks for recommended tyre sizes. However, using the tyre calculator supplied by Alex, the suggested tyre sizes, rolling radii and circumferences (recommended by Fiat and also that I know to have been used on Unos) are as below:

185/60/13: RR = 276.1, Circumference = 1734.79
175/60/13: RR = 270.1, Circumference = 1697.09 (* Standard UT size *)
165/65/13: RR = 272.4, Circumference = 1711.22 (* As fitted to my 70SX *)
155/70/13: RR = 273.6, Circumference = 1719.08 ( recommended Fiat size? )
145/75/13: RR = 273.8, Circumference = 1720.65

Note that the recommended size for a Uno Turbo, 175/60/13, has a SMALLER radius than the 185/60 fitted to your car Joolz. As do the 165/65/13 fitted to my 70SX and what I think is the recommended tyre size for Uno 60 and 70 models of 155/70/13. I'm also pretty sure the recommended profile for the 145 section tyres is 75 and not 80, which would mean the 145/75/13 tyres also have a smaller radius than 185/60's. Therefore fitting 185/60's will increase the rolling radius over the standard Uno wheels rather than decrease them. This will lose a small bit of acceleration but in the right conditions will slightly increase top speed.

When I get home I'll check my Uno handbooks to check the recommended tyre sizes as I might not have got them all correct However, 185/60's do look good on a Uno

 

[alexGS]

The original size for Uno 45 models was 135/(80) 13.
I've never seen a 145/75 tyre before

-Alex

 

[jo0lz]

.....Note that the recommended size for a Uno Turbo, 175/60/13, has a SMALLER radius than the 185/60 fitted to your car Joolz. As do the 165/65/13 fitted to my 70SX and what I think is the recommended tyre size for Uno 60 and 70 models of 155/70/13. .................

Therefore fitting 185/60's will increase the rolling radius over the standard Uno wheels rather than decrease them. .....................

However, 185/60's do look good on a Uno

Hmmmmm
I was working from 145/80/13 being the standard [WronG]
and then the 185/60/13 being smaller than that [WronG AGaiN]
Having doubled checked myself Alex is right
The standard tyre for the Uno 45 was a 135/80/13
AND BOTH tyre calculators don't give you a 135 option...LoL
SO I can't check the calcs
BUT 1986Uno45S you are right my tyres will be very slightly taller than the standard uno options of 135/80s...155/70...165/65...175/60
Must be an optical illusion as they do in fact look smaller diameter than the standard 135s on skinny steels when fitted on the car......they still rub the back arches very slightly when the car fully bottoms out though....
Plus those X1/9 alloys mean you can't really see the puny rear drums

 

[Hamsterjh]

Hi Guys,

Many thanks for the advice, I did settle for the 15" mags, with 195/50 R15 tyres(as 195/45 R15 not readily available). There is one small problem now though, when I drive over uneven roadway at 80+ km/h, the right backwheel tends to rub against the body, any advice on how to solve this problem.

Is coil over skock a option, stiffer coils at the back????

I have inserted Rubbers between the coil springs for now to see if this works, but do not trust this option really, afraid this might damage my coils, will test these rubbers to see if they prevent the body from rubbing against the wheels.

Any help appreciated.

Happy new year to all.

Regards,

 

[Jai]

o you can get your arches rolled, ie: the lip on the arch folded back and pushed out slightly to accomodate the tyre travel

 

[Chas Uno]

Hi Guys,

Many thanks for the advice, I did settle for the 15" mags, with 195/50 R15 tyres(as 195/45 R15 not readily available). There is one small problem now though, when I drive over uneven roadway at 80+ km/h, the right backwheel tends to rub against the body, any advice on how to solve this problem.

Is coil over skock a option, stiffer coils at the back????

I have inserted Rubbers between the coil springs for now to see if this works, but do not trust this option really, afraid this might damage my coils, will test these rubbers to see if they prevent the body from rubbing against the wheels.

Any help appreciated.

Happy new year to all.

Regards,

Your issue here is that the offset of your wheels are slightly out and/ or your tyres are too wide. The most effective way of solving the problem is to fit smaller width tyres or wheels with the correct offset, which is probably not what you want to do after shelling out for the wheels and tyres.

Fitting coil overs isn't going to solve your problem any more than fitting stiffer rear springs. If you go hard enough then they might not compress enough for the wheels to hit the body but you will most likely wreck the handling instead and shake your fillings out over every minute bump...

If the offset is only slightly out and it's just the wheel arch lip that is making contact then do as Jai suggested and have the inner wheelarch lip rolled. If it's the inner part of the wheelarch and/ or the suspension beam that is colliding then fit some spacers. Otherwise you'll have to fit thinner tyres or different wheels.

Alternatively, post up some pictures showing the tyre/ bodywork interference and maybe this might offer some clues as to a solution.

Good luck!

 

[Hamsterjh]

Thanks Guys,

I will post up some pics soon for any advice on solving my problem.

Many thanks for all the replies,

Regards,

Go Fiat

 

[alexGS]

Definitely don't give up on the new wheels yet!

I think you should try wheel spacers of the thin disc type (up to 6mm thick) as that may be all you need to stop the tyre rubbing on the inner wheelarch or on the rear beam. Many older FIATs had these spacers fitted as standard equipment on the front brake discs (the spacers are secured by the two bolts that hold the disc on, then the wheelbolts pass through the spacer). Make sure the wheelbolts still have at least seven turns of thread engagement.

This is the sort of thing I mean: http://cgi.ebay.co.uk/5mm-FIAT-ALFA...emQQptZLH_DefaultDomain_3?hash=item5ad57b3fde except, those don't have the smaller mounting holes between the wheelbolt holes (easy to drill some, of course).

If the tyre is rubbing on the outer wheelarch, you need to roll it as Jai suggested or trim it away carefully.

-Alex

 

[BKI]

Is it possible to fit a 16" 7.5j rims with 205/45/R16 tyres on it?
On a mk2 uno.

 

[87unoturbo]

Not easily but possible

 

[BKI]

What modifications should I make, to make it possible to fit 16" rims?