i never sped around corner or curvy roads in dry because dont think im up to it since never had proper training before or proper car.
but i often feel quite foolish n dangerous to drive +-110 in wet , strictly straighty though. cuz i sit in my fren city ivtec, he always confidently 100 on straight, raining.
---------- Post added at 06:23 PM ---------- 6 hour anti-bump limit - Previous post was at 06:17 PM ----------
hhmmm,, that consider very2 high arh? lol
then myb i will try lower abit to 260/250 la (currently front/rear 270/260, ~38psi)
wat car u ride, but City is a light car around 1100kg only lol but the front tire always looks annoying flat
When tyres are new with deep grooves, aquaplaning resistance will be good and running at 100kmh you may not feel anything, but still have to be careful. Once tyres are about 50% worn you will sure to feel the aquaplaning effect.....
Usually I will recommend air pressure from 28 to 38psi. 28 being lowest and 38 being the highest, therefore you are at the highest, but that depends on the tyres used, car weight, and the aspect ration (series of the tyres). Car manufacturer usually recommend from 29 to 32psi only, but theirs are for normal tyres, and they seek a balance of comfort in their recommendation.
My recommendation is to find the right air pressure for individual use, because some wants comfort and some more on spirited drives. As mentioned, if you feel using 38psi is okay with you, of course you can maintain that pressure.
Your tyres looks flat because your are using 50 series aspect ration.
I drive a Mitsu Super Saloon, pretty heavy car and 215/45R17 tyres....
---------- Post added at 10:28 AM ---------- 6 hour anti-bump limit - Previous post was at 10:18 AM ----------
1 of my car is running 595RSR dry grip is superb it's a hatch..on wet roads the grip is still there but on drizzle condition if heavy downpour...i slow down to 50km/h....if hit water puddle....get ready a basket and catch your heart as it jump out from your chest....AD07, 08 no need to say....drive fast in the rain with these you better wear pampers...
you guys run so high PSI on tires ah....it wears out the center of the tires more than the sides...although it gives better FC and less rolling resistance..but the handling is very floaty one. I'm using Dunlop direzza dz101 on my another car..I also pump about F32 R33 PSI only...because need to take into account after the air get's heat up the PSI will increase to around 35 PSI and on spirited drive will increase to 36+
just my humble 2 kupang opinion, better to run tires at the correct pressure...not too much or too less...because the best is to keep the tire contact patch as much as possible on the road and as flat as possible...too much pressure might stress the steel rib inside the tires too much, too less, the ribs can't hold the tires properly in shape...
AD-07 was bad in the rain, but some mentioned AD-08 has improved.
You mentioned correct pressure, so what is the correct pressure? Well, to me it varies, Car weight, tyres used, aspect ratio and so on. A heavier car will need higher air pressure. Soft sidewall tyres also needs higher air pressure. Again Ultra low profile tyres need a higher air pressure, so it all depends. 38psi will be on the higher side of the scale. I have been on F35/R33psi on most of my tyres. Latest GT Radial I have to reduce because more bumpy....
---------- Post added at 10:34 AM ---------- 6 hour anti-bump limit - Previous post was at 10:28 AM ----------
For narrower tyres can speed faster in the rain than wide tyres. I did 140 on 195/50/15 PS3 in rain for hours still got grip without a slight aquaplaning sign, but not 215/45/17 PS3 which lost grip at 110-120 in rain. That's scary.
Why you guys pump so high pressure? I put only 220KPa front 200KPa rear only...
When mention narrow tyres then 175/65R14 or 155R13 are narrow. They can cut through water better if that is what you mean, but that means their aquaplaning Resistance is good only. However with narrower contact patch their traction (grip) will be horrible.
I run 215/45R17 for many years now and I have done easily 160kmh in very heavy rain, but I was on the ultimate rain tyres those days the GY GS-D3. Another is Dunlop SP9000 and even Toyo T-1R are pretty good for aquaplaning resistance, however again we are talking about them being new and with 100% pattern grooves. Once they start to wear, their ability weakens, and when 50% worn the effect of aquaplaning will be pretty great.
