Stock height and rubbing? Ouch.
Maybe because you're on 18's?
Stock height and rubbing? Ouch.
There's something to be said about running a taller sidewall for more speed up top too. Autox for sure is better with a shorter tire but for tracking I prefer a taller tire
Stock height and rubbing? Ouch.
Maybe because you're on 18's?
You can fit a 255 with the right tire and offset, 9" wheels shouldn't be a problem. 660s are just that wide.I didn’t realize the GTI an R were that different on the rear end to where rubbing is a concern.
How much of that is attributed to rim width? I’m on 8.5” wide and I was surprised the 255’s fit with no issues, including at full turn on the front. I am lowered, but not slammed.
Taller tires will basically never make you faster, unless you're talking about spinning off the line. Or if you're RPM limited in upper gears (or for autocross, second gear).
Even then we're talking a 1.2% difference. So it'll feel like a 2-3hp/wtq difference at the very most(in favor of the smaller tire). For all practical purposes you'd basically never notice a difference from that alone.
You can fit a 255 with the right tire and offset, 9" wheels shouldn't be a problem. 660s are just that wide.
A taller tire can be the difference between having to shift up into 4th or 5th (and then downshift twice vs once). And you have less spring rate, more contact area, everything else being equal (comparing a 245/35 to a 245/40 for example). I'd say the difference is there, but probably minute enough that personally I'd rather err in favor of comfort (and thus taller profile), if they're street tires.
Except he is comparing different aspect ratios, not section widths.It's a 1.2mph diff at 100mph(245/40 vs 255/40 R17s). It's a 4mm (3/16in roughly) difference in sidewall height.
yeahExcept he is comparing different aspect ratios, not section widths.
245/35R18 vs 245/45R18 in his example.
12.25mm sidewall height difference and 3.9mph speed difference at 100mph.
Weird wear, seems like potential mfg defect.So today was my second day in the RT660’s. I was told these would get better after one full heat cycle, and I’d say I agree.
I definitely like these better than I did the v730’s after a few days. I’m not all that great and articulating descriptions, but it seems the tires just didn’t slide as much, and held the grip better.
However there is one tire that seems to be chunking out already at the seam across the tread. I emailed tirerack to get their take.
View attachment 252966
Definitely a defect.So today was my second day in the RT660’s. I was told these would get better after one full heat cycle, and I’d say I agree.
I definitely like these better than I did the v730’s after a few days. I’m not all that great and articulating descriptions, but it seems the tires just didn’t slide as much, and held the grip better.
However there is one tire that seems to be chunking out already at the seam across the tread. I emailed tirerack to get their take.
View attachment 252966
I've seen this in a LOT of 660s, consensus seems to be just send it and the mark will wear itself away. If TR will give you a new tire though, that's obviously preferableSo today was my second day in the RT660’s. I was told these would get better after one full heat cycle, and I’d say I agree.
I definitely like these better than I did the v730’s after a few days. I’m not all that great and articulating descriptions, but it seems the tires just didn’t slide as much, and held the grip better.
However there is one tire that seems to be chunking out already at the seam across the tread. I emailed tirerack to get their take.
View attachment 252966
I used to run pretty low in the rear in STH trim. Rear didn't need the artificial spring rate, and lower PSI have the tire a lot of slip angle toleranceI don't like creating spring rate with the rear tire pressure, unless I have to.
From my experience, once you get over mid 40 psi in the rear, the rear starts to have a line that if crossed, you get snap oversteer. Under mid 40's, it's more progressive.
I ran 245/40-17 for about 2 years, it was great especially on a manual car. I've never seen limiter in 2nd on an autocross course, so the extra acceleration everywhere was worth whatever small mph loss there isI'm thinking about going 245 40 17 RT660 next to get a tire that's likely as wide as my 255 V730, but with a shorter sidewall.
There's a noticed difference in acceleration with shorter tires.
I've only shifted to 3rd once. Our clubs speeds seem to slowly go up in 3 year cycles, then we have an incident, and back to tight slaloms and lower speeds.I used to run pretty low in the rear in STH trim. Rear didn't need the artificial spring rate, and lower PSI have the tire a lot of slip angle tolerance
I ran 245/40-17 for about 2 years, it was great especially on a manual car. I've never seen limiter in 2nd on an autocross course, so the extra acceleration everywhere was worth whatever small mph loss there is
Where are we in the cycle this season?I've only shifted to 3rd once. Our clubs speeds seem to slowly go up in 3 year cycles, then we have an incident, and back to tight slaloms and lower speeds.