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It seems our differences may be more geographical?
Geographical location does play an important part in choice of tire. Where I am based, extra ground clearance isn't needed and the local car washes don't eat your wheels.

Fitting 185/60R15 tires all round on the 451 ForTwo does have a number of advantages. One of the biggest advantages is that you don't have to carefully match different sized front and rear tires.

The ForTwo has always been sold with a narrower front tire even on the latest 453 model. However, the Smart Roadster was sold with same tire sizes front and rear. The Roadster is quite different from the ForTwo in having a much longer wheelbase, wider track and lower center of gravity.

The Roadster always used narrower front rims as follows.

185/55R15 fitted to 5" front rims and 6" rear rims.
205/50R15 fitted to 6" front rims and 7" rear rims.
205/45R16 fitted to 6.5" front rims and 7" rear rims.

For this reason, I would be inclined to fit 185/60R15 tires to 5.5" rear rims and either 4.5" or 5" front rims. For the 5" front rim you could use a steel front Roadster rim as the 24mm offset is almost identical to the 23.5mm offset of the front 4.5" 451 ForTwo rim. You can fit a 185/60R15 tire to a 4.5" front rim but it's an unofficial size so your local tire fitter may not be willing to fit it to this size rim. The disadvantage to using different sized rims is that you can't rotate the tires front to back, or at least it wouldn't be a good idea as you would be using a narrower rim on the back than the front.
 

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As always, any modification on any vehicle should only be done with a clear understanding of what it will affect, both positive and negative. and is done at your own risk. The factory specs are for a wide range of conditions. changing items to meet your local conditions or driving is purely up to the person doing the driving.
I couldn't agree more.
 

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Hello gents.
We just bought a Smart Fortwo for our second family car. It was cheap since it is 2005 model. Since I want to have a dedicated set of winter wheels/tires I was offered by a friend 4 identical Smart wheels 5.5Jx15'' ET22.
I want to go with the same size front/back option in order to rotate the tires each winter season front/back.

What would be your suggestion about the tire size for these wheels? 185/60/15 or 195/55/15 or any other popular size which could be found around the stores easily?
 

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Hello gents.
We just bought a Smart Fortwo for our second family car. It was cheap since it is 2005 model. Since I want to have a dedicated set of winter wheels/tires I was offered by a friend 4 identical Smart wheels 5.5Jx15'' ET22.
I want to go with the same size front/back option in order to rotate the tires each winter season front/back.

What would be your suggestion about the tire size for these wheels? 185/60/15 or 195/55/15 or any other popular size which could be found around the stores easily?

FIRST things FIRST ...... before you spend another dime on your Smart. Buy a can of Silicone Spray Lubrication and spray every Chassis and Suspension point you can find under you Smart. It will free up your Smarts suspension and make it ride like a car is supposed to. Do that First. Loosening up that Chassis and suspension is the most important change you will make to your Smart. After that have a ball and choose tires based on tire specs, and personal preference to stated performance style and looks like any other car.

Sure we will all have recommendations but if recommendations are coming from anyone who has not Lubed up there chassis and suspension, they will be describing a totally different hard driving, harsh suspension car.

LUBE YOUR CHASSIS AND SUSPENSION.
 

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Hello gents.
We just bought a Smart Fortwo for our second family car. It was cheap since it is 2005 model. Since I want to have a dedicated set of winter wheels/tires I was offered by a friend 4 identical Smart wheels 5.5Jx15'' ET22.
I want to go with the same size front/back option in order to rotate the tires each winter season front/back.

What would be your suggestion about the tire size for these wheels? 185/60/15 or 195/55/15 or any other popular size which could be found around the stores easily?

Didn't list your location but Discount Tire has some nice winter tires for 5.5" wide rims (185/55/15)



https://www.discounttire.com/buy-tires/nokian-tire-hakkapeliitta-r2/p/17244
https://www.discounttire.com/buy-tires/michelin-x-ice-xi3/p/24277


My top choice would be an all weather tire (with the snowflake symbol) and run them all year round, all four the same size and rotate them.


https://www.nokiantires.com/all-weather-tires/nokian-wr-g3/
 

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Didn't list your location but Discount Tire has some nice winter tires for 5.5" wide rims (185/55/15)


My top choice would be an all weather tire (with the snowflake symbol) and run them all year round, all four the same size and rotate them.
Thanks all lot for the replies.
My only concern is if the combination of 5.5Jx15'' ET22 wheels and 185/55/15 tires would be OK for the front of the 2005 model. Would there be any rubbing while making the turns or anything else which I have to take into consideration?
 

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Thanks all lot for the replies.
My only concern is if the combination of 5.5Jx15'' ET22 wheels and 185/55/15 tires would be OK for the front of the 2005 model. Would there be any rubbing while making the turns or anything else which I have to take into consideration?
The rims on the Smart 450 have very different front and rear offsets. The standard rims are 4Jx15 ET27 front and 5.5Jx15 ET-1 rear.

On a Smart 450 (1998-2005), 185/55R15 tires fitted to 5.5Jx15 ET22 rims will jam against the rear shock absorbers. Also, when using 185/55R15 tires on the front of a Smart 450 the tires will rub when using full steering lock unless you space the front panel out by about 5mm.

Do you have the later Smart 451 (2007-2014) model?
 

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We just bought 4 Nitto Roadhugger 195/55-15's at Discount Tire for our W453, mounted on the stock wheels.


A tremendous improvement over the Continentals it came with.


No rubbing over the narliest bumps.


SR
 

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The rims on the Smart 450 have very different front and rear offsets. The standard rims are 4Jx15 ET27 front and 5.5Jx15 ET-1 rear.

Do you have the later Smart 451 (2007-2014) model?
Our Smart is 450 model from 2005 and follows the wheels' description you wrote above. Obvoiusly it would be a tough call to install the same size wheels/tires on it.
Now it is fitted with 175/55/15 on the back and 145/65/15 on the front. I do dislike how narrow front tires are and I think that the ride will improve if they are wider.

I would go for the all-weather tires option and probably use the existing wheels, if the same front/back wheels is not an option.

I would be gratefull for your suggestion about what could be done to max widen the tires front/back - What widest could be fitted with 4Jx15 ET27 front and 5.5Jx15 ET-1 rear?
 

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Our Smart is 450 model from 2005 and follows the wheels' description you wrote above. Obvoiusly it would be a tough call to install the same size wheels/tires on it.
Now it is fitted with 175/55/15 on the back and 145/65/15 on the front. I do dislike how narrow front tires are and I think that the ride will improve if they are wider.

I would go for the all-weather tires option and probably use the existing wheels, if the same front/back wheels is not an option.

I would be gratefull for your suggestion about what could be done to max widen the tires front/back - What widest could be fitted with 4Jx15 ET27 front and 5.5Jx15 ET-1 rear?
155/60/15 and 165/60/15 sizes will fit the front 4Jx15 ET27 rims.
175/55/15, 185/55/15, and 195/50 sizes will fit the rear 5.5Jx15 ET-1 rims.

Vredestein and/or Continental are available in these sizes depending on location.

If you fit 4.5Jx15 ET23.5 front steel rims from the Smart 451 (2007-2014) to the front of the Smart 450 (1998-2005) you would have a choice of running 165/60/15 front and 185/55/15 rear, or 175/55/15 front and 195/50/15 rear.

Use wheel trims/covers when mixing 450/451 steel rims to keep a neat appearance.
 

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Our Smart is 450 model from 2005 and follows the wheels' description you wrote above. Obvoiusly it would be a tough call to install the same size wheels/tires on it.
Now it is fitted with 175/55/15 on the back and 145/65/15 on the front. I do dislike how narrow front tires are and I think that the ride will improve if they are wider.

I would go for the all-weather tires option and probably use the existing wheels, if the same front/back wheels is not an option.

I would be gratefull for your suggestion about what could be done to max widen the tires front/back - What widest could be fitted with 4Jx15 ET27 front and 5.5Jx15 ET-1 rear?

Nokian WRG4 185/55/15 on all 4 stock wheels listed above - no rubbing at full lock


The tire shop tried to sell me narrower Hankooks for the front which I replied - "These particular Nokians are only available in this size - narrowest width as well. Have your tech try out the fronts first, full lock to lock. (was also a $750 special order paid in full up front) I'll leave as a happy customer with four new tires if the fronts don't rub."

That being said, 'most' tire shops won't mount a 185 on a 4" wide rim so do what I did and order four (just specific Brand - Product - Size), and pay for them up front. I drove to the store in a F150 lol. Then when they come in, drive in with your 450 :) Most shops want the job done and tires and happy customer out the door.




 

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It’s the 451

Thanks all lot for the replies.
My only concern is if the combination of 5.5Jx15'' ET22 wheels and 185/55/15 tires would be OK for the front of the 2005 model. Would there be any rubbing while making the turns or anything else which I have to take into consideration?
The rims on the Smart 450 have very different front and rear offsets. The standard rims are 4Jx15 ET27 front and 5.5Jx15 ET-1 rear.

On a Smart 450 (1998-2005), 185/55R15 tires fitted to 5.5Jx15 ET22 rims will jam against the rear shock absorbers. Also, when using 185/55R15 tires on the front of a Smart 450 the tires will rub when using full steering lock unless you space the front panel out by about 5mm.

Do you have the later Smart 451 (2007-2014) model?
 

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Nokian WRG4 185/55/15 on all 4 stock wheels listed above - no rubbing at full lock


That being said, 'most' tire shops won't mount a 185 on a 4" wide rim so do what I did and order four (just specific Brand - Product - Size), and pay for them up front. I drove to the store in a F150 lol. Then when they come in, drive in with your 450 :) Most shops want the job done and tires and happy customer out the door.
Hello again. How are the tires so far? Did you experienced any problems driving with 185/55 on 4" wide wheel?
 

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Fitting 185/55 tires to 4" rims is not advisable. If rims came in 0.25" increments you could fit a 185/55 to a 4.75" rim. However, rims only come in 0.5" increments.

I've produced a guide below which assumes rims come in 0.25" increments (which they don't). The point is to show how the minimum rim width decreases as the aspect ratio increases with any given width of tire.

Minimum rim widths for 205s

205/50 5.5"
205/55 5.25"
205/60 5"

Minimum rim widths for 195s

195/50 5.25"
195/55 5"
195/60 4.75"

Minimum rim widths for 185s

185/50 5"
185/55 4.75"
185/60 4.5"

Minimum rim widths for 175s

175/50 4.75"
175/55 4.5"
175/60 4.25"

Minimum rim widths for 165s

165/50 4.5"
165/55 4.25"
165/60 4"

Minimum rim widths for 155s

155/50 4.25"
155/55 4"
155/60 3.75"

Tire fitters will often refer to a guide which groups 50 to 65 aspect ratios together. The guide gives minimum rim widths of 5.5" for 205/50 to 205/65 tires, 5.5" for 195/50 to 195/65 tires, 5" for 185/50 to 185/65 tires, 5" for 175/50 to 175/65 tires, 4.5" for 165/50 to 165/65 tires, and 4.5" for 155/50 to 155/65 tires.
 

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New set

Hey guys,

So I decided to get a wider set of tires (2008 Passion) for better overall handling. Want to go with Vredestein brand. According to the tire specs on Tire Rack (and stock rim sizes), I can go with 175/55/15 front and 185/55/15 or 185/60/15 rear. Which combination would you recommend?

Also, I noticed that the 175s are speed-rated T and the 185s are H. Does mixing these speed ratings create possible issues? The 175/65/15 are rated H, but I am afraid they will be too large for the front.

Any additional thoughts?

Thanks for your advice!
 

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I ran the T/H combo on our old smart with no problems.
Just make sure you don't exceed the T speed rating (118mph)
and you'll be fine...
 

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Vredestein list the Quatrac 5 on their website in sizes (amongst many others):

195/50R15 82H and 195/50R15 82V

https://www.vredestein.com/car-suv-van/tyre-finder/tyres/product/1/195/50/15/885-quatrac-5

This size could be matched to front 175/55R15 77T tires.

175/55R15 front matched to 195/50R15 rear could be considered a standard upgrade for the 155/60R15 front and 175/55R15 rear sizes.

Both the 185/55R15 and 185/60R15 tires have much larger outside diameters than the 175/55R15 tires so may cause problems for the car's ESP if you match them to the smaller outside diameter 175/55R15 size.

Also consider 185/55R15 82H front and 205/50R15 86H rear. 205/50R15 will fit the rear 5.5" wide rims. Although 185/55R15 has a recommended 5" minimum rim width, you could try them on the standard 4.5" wide front rims. In a post above, Mailman fitted his front 185/55R15 tires to even narrower 4" wide rims, although this is more extreme than fitting front 185/55R15 tires to 4.5" rims.

Front steel Smart Roadster 452 rims are 5Jx15 ET24 so could be fitted to the front of a Smart Fortwo 451.
 
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