500+ hp..tires?
#27
dont take this wrong way but for someone with a high hp car u seem pretty clueless. obviously 225 width isnt appropriate. u need a new set of rims that are atleast 10inch in the rear with atleast 275s. but i would go wider. the wider the better. then u will either need to roll the fenders or get fender flares.
#28
Original Gangster/Rotary!
iTrader: (213)
I've found 275/40-17 hook pretty nicely b/c of the bigger sidewall. We have similar setups/hp levels and when I was recently running Toyo RA1 road race rubber (60 treadwear) I could hook up from a roll in 1st gear......no lie. It was like being shot out of a catapult
They're awesome tires. ok in the rain, supposedly last 8-10k miles, I'd recommend you get some decent width wheels and try them out
They're awesome tires. ok in the rain, supposedly last 8-10k miles, I'd recommend you get some decent width wheels and try them out
#29
The king of the highway!
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/\ when my nittos wear out ill try those goodfella
let me chime in here dude since you helped me. I daily drive Nitto 555r's on my car 275/40/17 on my car and since then had no problems. Oh and also had some suspension setup as well.
but being ill be making alot more power than even you will. Later I plan on getting 10inch wide tire with 305 nitto 555r which are the safest drag radial for the street (even in the rain its pretty good since i daily drive the car.) but i want to do a 45 thickness tire but its not really good for the street so i have to take what i can get
Ill take a pic later to see the thread wear (3k miles so far and street race at least once a week and do a little 8th mile run).
lowering the tire pressure helps alot too!
let me chime in here dude since you helped me. I daily drive Nitto 555r's on my car 275/40/17 on my car and since then had no problems. Oh and also had some suspension setup as well.
but being ill be making alot more power than even you will. Later I plan on getting 10inch wide tire with 305 nitto 555r which are the safest drag radial for the street (even in the rain its pretty good since i daily drive the car.) but i want to do a 45 thickness tire but its not really good for the street so i have to take what i can get
Ill take a pic later to see the thread wear (3k miles so far and street race at least once a week and do a little 8th mile run).
lowering the tire pressure helps alot too!
#30
Built Not Bought
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I just put on Toyo R888's 265/35/18 and am having no problems with grip at 450whp. My greddy T78 is a bit more laggy than normal as it needs a rebuild, but it still makes decent power once it spools. So this may be why I have no problems with traction. It doesn't have a big kick like it should, it just builds and builds smoothly.
My car is also lowered a bit (H&R springs with the stock R2 shocks). So that may be helping.
Either that or I just cant shift fast enough to keep the boost built up enough to break them loose when going from 2nd to 3rd. haha
I also don't get why all the talk about driving in rain, its always a bit more dangerous on slippery roads, but as long as you are cautious you should have no problems if you have somewhat decent tires (excluding flash floods of course)
My car is also lowered a bit (H&R springs with the stock R2 shocks). So that may be helping.
Either that or I just cant shift fast enough to keep the boost built up enough to break them loose when going from 2nd to 3rd. haha
I also don't get why all the talk about driving in rain, its always a bit more dangerous on slippery roads, but as long as you are cautious you should have no problems if you have somewhat decent tires (excluding flash floods of course)
#31
Thanks for all the tire feedback. Sounds like all these tires are a form of drag or competition tire right? I've heard good things about the ra1's. One of the guys on the australian site (has been over here too) runs them at 550 hp. Not sure the size he was running though. Treadwear of 60 is definitely better then 0. I think part of my problem was once i did finally start breaking my tires loose they just tore themselves up. I'll look into those other tires too, and compare treadwear. My plan at this point is to stuff the widest tire i can in without major modifications. If i can go a little wider maybe i can get a little longer wear tire too. But i'll have to compare cost on the different sizes also. If i'm spending a lot more for a particular size it might not be worth the longer wear.
#32
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/\ just curious but what tires & size you have on your car now?
and i agree with Chudsoncoupe. as long as you dont try to boost in the rain you shouldnt have problems
and i agree with Chudsoncoupe. as long as you dont try to boost in the rain you shouldnt have problems
#34
Original Gangster/Rotary!
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I'll be able to better report on the Kumho XS (which is what I chose for my latest set of wheels) once I break my motor in, but so far I've been *very* impressed with the dry grip on highway on/off ramps.
#37
SAE Junkie
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The 550rwhp car is Jason's (rotorpsi1) and he uses Toyo RA-1's in the 225-245 ballpark. His car is the reason why I went the Toyo way (I was going to get RA-1's also but my shop told me they were discontinued and would be much older stock than the R888s and possibly starting to go off already).
I think he did post once that the 550rwhp dyno run was on a slightly optimistic dyno, and the 'real' number would be around 500rwhp if you went by dyno dynamics numbers (which is pretty much the standard we use in Australian Capitol Cities).
Then again to get that 500-550rwhp into terms with your complete bullshit American dynos would be probably 600-700rwhp. Most of the American cars I look at don't have half the power they claim, just like plenty of JDM bs workshops here.
I think he did post once that the 550rwhp dyno run was on a slightly optimistic dyno, and the 'real' number would be around 500rwhp if you went by dyno dynamics numbers (which is pretty much the standard we use in Australian Capitol Cities).
Then again to get that 500-550rwhp into terms with your complete bullshit American dynos would be probably 600-700rwhp. Most of the American cars I look at don't have half the power they claim, just like plenty of JDM bs workshops here.
#39
Rotary Enthusiast
I went from Dunlop SP 275-30-19 to Toyo T1R 275-35-19. I know 19 is not your interest but I am just comparing tires here, my car is a RX-8 so my gears are shorter than yours which aggravates the traction situation since my third is just slightly longer than your second. With 500whp in my car and Dunlops it would be almost un-drivable until 4th gear....even in third from a roll it would break loose. The Dunlops were sized at 275 but in measuring them with an actual ruler they seemed to be on the smallish side. Going to the Toyos they grew in width by almost 3/4 of an inch....and they were also 275's but they run on the larger side...between that and the slight sidewall height increase and better compound from the Toyo's the car is way different. Now it has a hard time spinning in second. It still spins but it feels like my friends corvette spinning in that it spins but its grabbing and you feel it pulling and its controllable. not to mention that its way less spinning in general...no more smoke cloud from a roll. They are also harder and longer lasting than drag radials so they should last at least 10k in my opinion. Another note was that I had the car aligned so now they sit closer to being flat on the ground when the car is sitting. Before I had camber and they rode in the insides edges of the tires, this has a considerable effect on traction.
I would suggest going with a 9.5" wide rim at least and some 275 wide rears. They don't necessarily have to be drag radials, those don't last for ****...and they are expensive...and if you drive your car on weekends you will still go through a set each summer and that is ridiculous...just don't make them hard all season tires either. And get that car aligned better. sitting flat to the surface is very important to traction...with this I know you will see a difference...I just changed brand and height a bit and it made a world of difference...you have lots of room to get better.
Chris
I would suggest going with a 9.5" wide rim at least and some 275 wide rears. They don't necessarily have to be drag radials, those don't last for ****...and they are expensive...and if you drive your car on weekends you will still go through a set each summer and that is ridiculous...just don't make them hard all season tires either. And get that car aligned better. sitting flat to the surface is very important to traction...with this I know you will see a difference...I just changed brand and height a bit and it made a world of difference...you have lots of room to get better.
Chris
#48
Original Gangster/Rotary!
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Brent, get some 17x9 (or 8.5) fronts and 17x10 rears and order Toyo RA1s in 255/40 and 275/40. Boom, end thread.
If you need a source on RA1s I can PM you my contact, his pricing is very reasonable.
If you need a source on RA1s I can PM you my contact, his pricing is very reasonable.