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MINIAC · Mar 24th, 2008, 11:51 PM

Quote: Originally Posted by cambiker71 (original)

Hi, hopefully you haven't bought these 205/55r15 tyres yet as they will be considerably taller in sidewall height compared to the 175 standard fitment, not only will this affect the appearance but the handling will suffer too and your speedo will read slower than your actual speed. The size which will work best on that rim would be 195/55 r15 in whatever speed rating you fancy (v is most common and therefore cheaper).

The simple rule of thumb when changing tyres sizes is that if you go up a width then go down a profile to keep the same/similar rolling radius
e.g. 175/65r15 to 185/60r15 to 195/55r15 to 205/50r15
working out the sizes i'll estimate the 205/55 is approximately 20mm larger in overall diameter than the 175/65

NOT TRUE ...

FAQ: What should be considered in choosing a wheel and tire package?

Mar 24th, 2008, 11:51 PM	#17
MINIAC MINI Profiler Join Date: Feb 2001 Location: City By The Bay Local Time: 06:20 PM Posts: 8,708 Offline	Quote: Originally Posted by cambiker71 (original) Hi, hopefully you haven't bought these 205/55r15 tyres yet as they will be considerably taller in sidewall height compared to the 175 standard fitment, not only will this affect the appearance but the handling will suffer too and your speedo will read slower than your actual speed. The size which will work best on that rim would be 195/55 r15 in whatever speed rating you fancy (v is most common and therefore cheaper). The simple rule of thumb when changing tyres sizes is that if you go up a width then go down a profile to keep the same/similar rolling radius e.g. 175/65r15 to 185/60r15 to 195/55r15 to 205/50r15 working out the sizes i'll estimate the 205/55 is approximately 20mm larger in overall diameter than the 175/65 NOT TRUE ... FAQ: What should be considered in choosing a wheel and tire package?