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245/35R19 fronts are the best cause its only 0.14 % bigger than the 245/40R18 and the rear 275/30R19 is -0.86% smaller than 245/40R18 so its with in 3% so that means when im going 112.65kmph ill be really going 113.65kmph

  • Dropping a turd
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But most people fit 275/30/20 = 674mmOD and 275/35/19 is 675mm OD

Car will be more comfortable and grip better with the taller tyres.

GT R spec runs 275/35/19

Edited by arronm
  • flame magnet
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ah 19's not 20's. yes 40/35 profile is best. my bad

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  On 26/05/2014 at 12:55 PM, coreys912516 said:

245/35R19 fronts are the best cause its only 0.14 % bigger than the 245/40R18 and the rear 275/30R19 is -0.86% smaller than 245/40R18 so its with in 3% so that means when im going 112.65kmph ill be really going 113.65kmph

  On 26/05/2014 at 1:23 PM, arronm said:

But most people fit 275/30/20 = 674mmOD and 275/35/19 is 675mm OD

Car will be more comfortable and grip better with the taller tyres.

GT R spec runs 275/35/19

My 20's with 245/35 put the speedo out but like 3km from where it was. For the sake of 3km difference I would go the extra 5% profile and enjoy the comfort and grip it offers

  • Dropping a turd
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  On 26/05/2014 at 1:37 PM, Ralph Wiggum said:

See how intelligent I look with glasses

Edited by arronm
  • Moar Powar Babeh
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I was thinking if we added a few more strands of hair it wouldn't be too far off the the mark?? :P

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I'm not going 20"S I'm going 19's. Not really bothered I have 1,000 tyres on hand if I want to change the profile perks of being a tyre fitter

  • Dropping a turd
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We know you arnt getting 20's. But do you understand what we are trying to say.

35/30 is the wrong profile

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I used my 35 profile 20 for comparison to a 40 profile 19 because they're basically the same. Point being speedo won't be out enough to worry about, extra comfort and grip. I can get cost price tyres, but why not just get it right the first time...

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