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Incase anyone is interested in weight differences i did a comparision with a quality set of bathroom digital scales. Wheels are stock 16 x 8's

Be4 with 50% tread left on 2yr old Falken 329's = 18.5kg

After with new R1R's = 18.2kg

That was weighing two different wheels each time.

I realised after it was too late but i should of weighed all x4 together but anyhow i did expect the r1r's to be significantly heavier with the thicker casing, just goes to show the difference in the quality of rubber used i spose

Mike

Edited by Mike__
Incase anyone is interested in weight differences i did a comparision with a quality set of bathroom digital scales. Wheels are stock 16 x 8's

Be4 with 50% tread left on 2yr old Falken 329's = 18.5kg

After with new R1R's = 18.2kg

That was weighing two different wheels each time.

I realised after it was too late but i should of weighed all x4 together but anyhow i did expect the r1r's to be significantly heavier with the thicker casing, just goes to show the difference in the quality of rubber used i spose

Mike

Not to be picky but you obviously measured these with the tyres fitted to the wheels?... The difference in weight is only 300grams - this could be mostly due to a different amount of balancing weights used.

yes tyres fitted to wheels when weighing. Can't recall exact weights prior but they were similar to what i listed below. They may have been a little less as they were the 'clip on' type and hence sat further away from the centre of the wheel than the now stick on type

Just checked total of counterweights on all 4's with the new tyres: 25g, 45g, 55g & 80g

Scales have been consistant in the past but they do only round to 100gm so the difference could be less. Yes i could have weighed x 2 heavier wheels be4 & x 2 lighter ones after without realising & the difference would be less but either way i did expect them to be heavier, but was not the case

Mike

Edited by Mike__

Federal 595SS 235/45/17 on a 9.5" rim.

When I first got them I could do 5k launches in the dry with 150rwkw, it would just chirp a bit and take off like an awd. After about 3 weeks of this they turned to shit, could barely do a mild launch. After 2 months they were f**ked, even though 75% tread left, sliding everywhere. In the wet it was another story, would spin up 3rd gear coming onto boost, pretty scary when you didn't expect it.

The fact they were stretched so much probably contributed to the bad wear.

I've used 2nd hand tyres and had one put on back to front that gripped better than these in the wet.

Edited by Rolls
Federal 595SS 235/45/17 on a 9.5" rim.

When I first got them I could do 5k launches in the dry with 150rwkw, it would just chirp a bit and take off like an awd. After about 3 weeks of this they turned to shit, could barely do a mild launch. After 2 months they were f**ked, even though 75% tread left, sliding everywhere. In the wet it was another story, would spin up 3rd gear coming onto boost, pretty scary when you didn't expect it.

The fact they were stretched so much probably contributed to the bad wear.

I've used 2nd hand tyres and had one put on back to front that gripped better than these in the wet.

I had a really nice dinner last week...

Saved some put it in the fridge and reheated it the night after and surprisingly it tasted a bit better than fresh, but I suppose it was starting to mix the ingredients more.

The next night I reheated some more but it didn’t taste the same and I felt a little queezy afterwards but put that down to the beer.

On the last night I reheated it again and after the first mouthful I all near gargled and chucked.

Do you think I blamed the original meal or the Chef?

Sure, as cooling it down to near freezing then reheating it to near boiling three times surely couldn’t have made it go off. I have had take away that could be reheated more times than that……Sound familiar?

Changing the characteristics of a tyre with excessive forces, heat and cold also changes the performance characteristics.

One reason why in premium motor sport events they change tyres well before they are worn out or damaged. You cant short cut your way to the top.

I hope this helps explain what happened to your tyres. :bunny:

Further to Bullet 32's post, new tyres should always be "worn in" for a minimum of 500klm before any heavy use (launches-track work) is attempted or the tyre will go off as you describe.

I have some "got no $ specials" Federal 595SS 255/40/17 on the ass of mine atm am pushing a lot more power through the rears than you and was just thinking y/day in over 20 yrs of driving they have to be the best bang for buck tyre I've come across. Very competant and predictable. I bought them as a stop gap (r.w.c) with the intent of uprading when things pick up again, doubt I'll bother now.

Kumho KU31 (Previously owned)

225/40R18

Dry Handling 7/10

Wet Handling 7/10

Value 8.5/10

A good mid-range tyre that suited road use fine and are great for a car without too much power. They got a tad noisy but value for money you can't really go past them.

Ling Long somethings (Put on to get compliance, not my choice!)

Dry Handling 3.5/10

Wet Handling 1.5/10

Value 3/10

I guess you get what you pay for. Extremely hard compund, noisy and very little grip. Also hard to balance. The very next day after I got my car I took it into work and had to get them balanced again. It took a good balance from a very good balancing machine (Hunter Road Force) before I could get them to spin up nicely.

When I get some new wheels/tyres I will either be upgrading to Toyo Proxes R-1R's or Pirelli PZero Rosso's (Depending on what I can get the Pirellis for).

Edited by Hank Scorpio
Changing the characteristics of a tyre with excessive forces, heat and cold also changes the performance characteristics.

One reason why in premium motor sport events they change tyres well before they are worn out or damaged. You cant short cut your way to the top.

I hope this helps explain what happened to your tyres. :)

Well to be honest they were still better than expected, they only cost $135 each, I was impressed at the initial grip, but I thought even with rough treatment they wouldn't wear out that fast.

Hey guys I'm looking to get some new tyres for my GTR. Need to be 263/35/18. Car is street driven so I want something that I'll get decent mileage out of. Looking at spending around $400 - 450 per corner. Anything under that is a bonus :banana:

Further to Bullet 32's post, new tyres should always be "worn in" for a minimum of 500klm before any heavy use (launches-track work) is attempted or the tyre will go off as you describe.

I have some "got no $ specials" Federal 595SS 255/40/17 on the ass of mine atm am pushing a lot more power through the rears than you and was just thinking y/day in over 20 yrs of driving they have to be the best bang for buck tyre I've come across. Very competant and predictable. I bought them as a stop gap (r.w.c) with the intent of uprading when things pick up again, doubt I'll bother now.

how much were these tyres.. im after same profile set..

  • 2 weeks later...

just got hooked up with a new set of 4x Marshall Matrac Tx Ku-17

sport profile, 235-45-17", meant to be a direct competitor to my old hankook k104 ventus tyres

$130 ea fitted and balanced

I will update my thoughts in a weeks time, cant boot it till after mid-week tune time

then again in a month or two..

post-18854-1237184657_thumb.jpg

what does everything think of:

-Bridgestone G3

-Bridgestone RE01

-Toyo R1R (are they semi slick?)

- Toyo T1R

Need new tyres soon and thinking of those options.

Thanks Luke

what does everything think of:

-Bridgestone G3

-Bridgestone RE01

-Toyo R1R (are they semi slick?)

- Toyo T1R

Need new tyres soon and thinking of those options.

Thanks Luke

See above for my opinion on the r1r's.

From my own research/ info from the toyo motosport dealer in perth r1r's are an old model semi slick. used 2 be called the 'trampiro' and made in 2 sizes only with a tyre wear of 100.

Now there back on the market with a tyre rating of 140 (told to make it legal for some classes?) & available in a wide range of sizes. My doing this i spose theres little R&D which keeps the cost down.

tyre shape is very 'square'. my 225/50/16's have a slightly wider footprint than advan yokies on my brothers evo in 235's

My cars only driven on w/e. i do under 4000km per yr & an occasional track day hence the choice

How much heat do you think it will take to get the 595 Rs-R working ok for street conditions.

Do you think under normal street conditions they will grip more, or less than the normal 595ss ?

Im looking for an amazing street tyre, thats going to be able to be ok on the track. I dont really want to run a street tyre + a track semi at this stage.

just got hooked up with a new set of 4x Marshall Matrac Tx Ku-17

sport profile, 235-45-17", meant to be a direct competitor to my old hankook k104 ventus tyres

$130 ea fitted and balanced

I will update my thoughts in a weeks time, cant boot it till after mid-week tune time

then again in a month or two..

post-18854-1237184657_thumb.jpg

good tyre so far

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