Hi,

Got a Bravo Active on the stock 16x7 steelies. Just bought a set of wheels from Shop4parts which are OEM Fiat accessories, in 17x7 fitment.

Question; the tyres I have on at the moment on the steels are 205/55 16, but the standard tyres on the 17's is 225/45 17. I'm slightly confused as to why the tyre is in fact wider on the 17" wheel, when both the 16" and 17" wheels are both the same width. Will a 205/45 17 tyre stretch?

Cheers

ascott92 said:

... I'm slightly confused as to why the tyre is in fact wider on the 17" wheel, when both the 16" and 17" wheels are both the same width ...

Click to expand...

There is a tolerance envelope of rims suitable for tyres. Check-out a rims conversion chart – this indicates “approved rims” against tyre sizes.

I’ve a Bridgestone Pattern Digest [2008] that gives 5½J to 7½Jx16 rims as “approved” for 205/55R16 tyres, & 7J to 8½Jx17 for 225/45R17 tyres.

I’ve no knowledge (or experience) of fitting tyres to rims that are not “approved” or outside spec.

Edit 2011/05/05 12:18
I should have added that 6½J to 7½Jx17 rims are approved for 205/45R17 tyres.

Can i fit 205/55/R16 on my Fiat Bravo mk1 whitout any modifications?

I'm not sure. The width sounds fine, provided the wheel offset is low. But a tyre that deep may not fit without scraping. You may need lower profile tyres. Try on the Bravo/Brava section of this forum, someone will probably have experience.