« Reply #6 on: 04 December 2016, 12:15 »
I've run a GTI and an R on both 18's and 19's and yes, there is a definite difference in ride quality but by no means is it bad for a sporty hatch with standard suspension.
I'm quite fussy about suspension having owned GTI's and their ilk for nearly 30 years, many of which were on modified (harsh) suspension years ago, which has really made me appreciate how well modern VW's ride and handle with standard suspension.
Santiagos are an expensive option so I'm sure, as kalimon suggests that there will be someone willing to bite your arm off if you fancy a set of Nogaros.
The 18" tyres are also much cheaper to replace and the Nogaros are easier to clean!

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‘25 8.5R, ‘23 8R, ‘20 8CS, ‘19 135iX, ‘19 TCR, ‘17 Ed40, ‘17 GTD, ‘15 7R, ‘13 GTI PP, ‘11 GTI, ‘09 GTI, ‘98 Ibiza Cupra, ‘05 GTI, ‘06 Polo GTI, ‘04 GT TDI, ‘05 Fabia vRS, ‘02 GTI T, ‘03 Ibiza TDI 130, ‘01 Leon 180, ‘89 mk2 16v, ‘99 Ibiza TDI, ‘96 VR6, ‘98 Ibiza TDI, ‘92 VR6, ‘88 mk2 8v, ‘92 Polo G40, ‘91 mk2 8v, ‘89 mk2 8v, 205 GTI 1.9, ‘83 mk1 GTI, ‘80 Scirocco GTI, plus some others I’ve forgotten