Tyre you will be getting
 

Well I am new to getting decent Tyres.

I am wondering what is the best. I have been looking at http://www.ft86club.com/forums/showthread.php?t=5072 for ideas on the size i will want.

I think i could get away with the sizes of 245/35R18 & 225/40R18.

I think the 245/35 might be the way to go... But I have no idea :S.

Size of wheels will be 18x8 +40.

Brands I seen good reviews on are Yokohama S.drive.

Please help me decided... Seen a good price on Federal's 595-SS. Budgeting around 500-700 depending on how good they are.

what will you be doing with the car?

Toyo R1R approx $190 or the older T1R $150ea are about the best bang for buck tyre around.

Daily driving and track. Most weekends will be up on a twisty path.

There is no "best"; everything's a compromise.

I am suggesting that if you go ahead and fit wider and stickier rubber you will lose a lot enjoyment and more importantly, given how powerful the car is, you will lose the ability to make steering corrections with the throttle.

Perhaps you could upgrade the rubber on the standard rims,seeing what you think, then make incremental changes as opposed to going all out in one go.

This is just my 4 & 1/2 cents.

Static, why do you want a 245 dude? On a car with 200hp, this is massive overkill. You won’t be able to spin them at all. Also, you wouldn’t want a 245 on an 8in wheel. That’s far too big. 8inches is 200mm and a 245 tyre is 245mm wide. That’s a big difference. So, if we just use maths, a 205 tyre is perfect on an 8, and I usually put 205’s on 8’s. Having said that, you would just go with a stock size 215, as these are fine on an 8. You could go to a 225, but there is little to no point.
Some people would go wider, but it is pointless. When your tyre is that much wider than the rim you WILL get sidewall flex, plus ballooned tyres look crappy :P

Personally, I will probably get 215/45/17 Bridgestone Adrenalin RE002’s. RE002’s are outstanding tyres for grip/handling, and they perform well in the wet as well as the dry.

Captain Snooze is right about getting stickier rubber, as for brand my personal preference would be Hankook or Continental Contisportcontact 5P.

what is the stock tire size again? its exactly same as the Prius tyres right?

215/45/17 on an 18" wheel???

I am new to all the tyre sizing stuff... but reason i mentioned those size is that is matches the rolling diameter of stock wheel.

So 225/40R18 would be better then.

Huh?? I didn’t mention anything about rim diameter or tyre profile for your tyres? I only mentioned tyre width in relation to rim width.
The only time I mentioned profile or diameter when saying what I was getting for my car.

But 235/35/18 or 215/40/18 are closer to the stock rolling diameter than 235/40/18, I don’t know what is available in those sizes though.
None of them match the stock diamtre

My bad, didn't specify properly. What I'm trying to say is and for my personal preference for a track day tyre for an 86. Would be using 17" really sticky tyres with a decent size width probably stock width. Just a thought off the top of my head. :bonk:

reason why I choose 17" over 18" is because of power and weight, 18" is heavier therefore uses up more power but has lots of contact with the road, 17" is lighter therefore uses less power doesn't have as much contact with the road as the 18", that's where the sticky compound comes into play.

Not sure if I made any sense. trying to multi task at work lol!

my ideal size is:

17s - F: 215/45/17 on 17x8+45 R: 225/45/17 on 17x9+45, or

215/45/17 on 17x8+42 all round

18s - F: 225/40/18 on 18x8+45 R: 225/40/18 on 18x9+45

225/40/18 on 18x8+42 all round

Thanks!

Also found this.

"Tyres

Front: 215/40R18
Rear: 225/40R18"

as 18 stock size

To me that looks like you are going to be introducing more understeer.

probably but 10mm isn't a lot and it depends on the brand and model of the tyre as well as not all 225s have the same width.

Adding 10mm more than the front is more understeer.


Sure,agreed but I think it very uncommon for people to use different brands of tyres on the same vehicle. I am suggesting a 225 in a given diameter and aspect ratio AD08 is wider than a 215 AD08 of the same diameter and a/r.

true but maybe able to compensate with wheel alignment, sway bar etc.

I have read 2 different reviews that state the car pulls 0.91g and 0.93g on those shitty Prius tyres. Now, if it has that sort of cornering ability on ordinary tyres I think upgrading the tyre model at the same size will be more than enough for me. The car is not over powered; too much grip will detract from enjoyment to be had.

Once again, with inflation,just my 8 & 3/4 cents worth.

With due respect, why complicate matters. Why not just keep the front/rear tyre widths the same regardless of width? Suspension design is a huge can of worms. Why would you deliberately make work for your self?

Personally i plan to keep my car stock sussy/wheels wise for at least 12 months. because i want to enjoy the excellent work by Tada san and his team.

however i can see why some people want to "upgrade" their car, maybe due to look (the car is screaming to get lowered also stock wheels have weak offset) or performance reasons.

personally i would do sussy and wheels/tyres at the same time because the car still looks like a SUV with better wheels but not lowered. so my pick of wheel/tyre size would be considered together with sussy.

Why are you calling the factory fit tyres "shitty prius tyres"?? They aren't a shit eco tyre. they are a michelin sports model tyre......
The media bullshit worke don you I see :)

Nuance and subtly are difficult to get across in forums. I was was being a little sarcastic when I said that. But the gist I was trying to get across is if the car performs this well on those tyres imagine what it could do on sticky rubber.

I read that in a different article that specified that the GTS also has bigger brakes

The GTS has rear ventilated brakes.

I am basing my plans on that this will be the case. I want to upgrade GT brakes to GTS spec. So that will be 294mmø DBA 2 piece rotors for the front (approx -2 kgs each) and 290mmø DBA rotors for the rear. Assuming same calipers. New caliper mounts required.

Good ol' Toyota Australia marketing again. GT owners don't brake as hard/often as GTS owners?

It's not that gt owners don't brake as hard as gts owners, it's just they don't drive as fast, so they don't need to brake as hard. :burnrubber:

If you are going to do a brake upgrade. Sell a kidney on the black market and get the trd brake kit :bellyroll: I really want red calipers. Not painting them though... Upgrade down the track once sc or turbo is bolted on. :thumbsup:

I think it might have something to do with the 16" wheels on the GT... i could be wrong.

They are quoting TMCA press doco... so i would say that is as good as being confirmed by TMCA...

Not sure if you read the article or not.

http://www.carsales.com.au/reviews/2...h-review-30686

GT 16x6 and GTS 17 x 7. Enjoy.

so you can buy those for less then $6000...

17x7.5 inch RPF1s were part of my equation anyway (approx -2kgs over stock 17 inch rims). For me all that cosmetic stuff in the GTS is a waste of money.

Spending 10k on a cosmetic item is not my style. Plus getting an engineer's certificate is tedious.

I hope that is a mistake on carsales' behalf. The Scion FR-S sits on 17x7.5 rims.

on more then just carsales/motoring's site.

I agree with the RE002's. I put a set of these on my MX5 and the grip is fantastic on the track and on the road. They also feel good in the wet. Price wise they're pretty good too. The 205/40R17 for the MX were just over $200 a corner.

18x9 235/35/18 federal 595 rs-r up front
18x10 255/30/18 federal 595 rs-r rears
Obviously with a bit of rolling required

i am now thanking about:

18x8.5 225/40/18
19x9.5 245/35/18

*** Post corrected from updated information

no. GTS has bigger disc front and back. the front pads are the same but the rear pads are different.

It's your car and all but WTF would you do that? You will kill all manner of steering response, weigh down the car with unsprung weight and not necessarily improve handling or grip.

While I haven't measured them, everything I've read in the press, Toyota documents and training says the brakes are roughly one inch larger on the front, 10mm larger on the rear and vented rear too.

Hmmm ok I stand corrected

They are lightweight work cr kai, plus ive already got a gtx3071r and new haltech platinum,also waiting on an email from cp carrillo on when i can get a set of pistons and rods as they are doing the final touches for the fa20.
Will probably be needing some grip.