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Hi. Its time to change all the tyres on my 03 plate Spider, 2 litre twinnie
At the moment they are the standard, 205 x 50 x 16. Am thinking of changing the size to 205 x 55 x 16 just to 'bulk' it out a bit more. I understand that the speedo will be slightly out but not to much.
Are there other size's I should look at as well?
Have looked at the trye size calculators, but was hoping for some proper advise from people who have done it!
 

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present: Alfa Gtv 3.0 v6 1998; 2008-Present. past: Alfa Giulietta 1.4 MA 170 2012; 2016-2021
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I did that and haven't really noticed any difference. Compared with a GPS speed monitor it's still slightly over reading so all is fine.
 

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I have 205-55/16 on my Spider. I did it to help improve the ride, however did not seem to much difference and the minimal difference in tyre rotation only makes the optimistic speedo a little more accurate. This is the maximum size to fit under the front suspension legs, there is just enough clearance.
 

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I run 205/55/16 tyres and consider that there is no downside whatsoever. I was happy that I had them fitted just over a year ago when I had a tyre wrecked by potholes on a lousy Spanish motorway, I was able to easily find a new tyre at a nearby tyre fitters as 205/55/16 is a common size whilst 205/55/16 is most definitely not, also the 55 profile is cheaper.

http://sensingsys.myzen.co.uk/GTV side view.jpg

An earlier thread on the subject: https://www.alfaowner.com/Forum/alfa-gtv-andamp-916-spider/913250-tyres-again-zzz.html
 

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Managed to bag a set of primacy 4 from costco for £211 fitted though they were a bit funny over the size change and refused to fit, so I asked would they fit to just rims they said yes so I took them off striped tyres off and took rims there and they fitted tyres, bizzare really
 

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It's even worse in the USA - even if the same size tyre but not recommended fit for the car, Costco will not fit them to a car.
 

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215/45/16 will be too small in circumference and will not look good on the car.

I have change the original tyres to 225/45R17 on a rim 8" wide.
How about 215/55/16 .
Would it fit , width wise ?

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I would say 215/45/16 is close to the standard 205/50/16, but the diameter of the tyre will be 11.5mm less. See

https://www.willtheyfit.com/index.p...ct2=45&wheel_size=16&wheel_width=7&offset2=30

215/55/16 diameter will be 31.5mm more....

https://www.willtheyfit.com/index.p...ct2=55&wheel_size=16&wheel_width=7&offset2=30

Rich ?
 

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I would say 215/45/16 is close to the standard 205/50/16, but the diameter of the tyre will be 11.5mm less. See

https://www.willtheyfit.com/index.p...ct2=45&wheel_size=16&wheel_width=7&offset2=30

215/55/16 diameter will be 31.5mm more....

https://www.willtheyfit.com/index.p...ct2=55&wheel_size=16&wheel_width=7&offset2=30

Rich ?
Good one , sir ! Much appreciated, although doesn't make much sense to me ...
If 215 is wider than 205 , is wider

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