Canadianz Posted June 13, 2008 Share Posted June 13, 2008 Well the Datsun moved under its own power the other night which was very exciting, so we are getting very close now. I also got a ride in an R32 GTR, MAN those things are quick ! Im wondering now if my rims will be too small to give the car any traction, I was looking at a set of 16x7 rewinds with I think 205/45/16 rubber on them. Its not set in stone yet though . What size of rear tires are you guys running and how are you finding them? Ideally I would like to get some 16x9's and flare the cars but choices for a Watanabe style rim is pretty slim in that sizing. Any one have any ideas or experiences that could help me out ? Thanks Chris Crombie Quote Link to comment Share on other sites More sharing options...
janaka Posted June 13, 2008 Share Posted June 13, 2008 on a 7" rim i would try to go with a 215 or maybe a 225 if possible. a slightly larger contact patch would probably be benificial for you Quote Link to comment Share on other sites More sharing options...
BirdmanZ Posted June 13, 2008 Share Posted June 13, 2008 You will need more tire than that. Trust me. I have 225's on 8 inch wide wheels on the back of my Z with a stock RB26 and I have no traction in first or second gear under boost. Brandon Quote Link to comment Share on other sites More sharing options...
ZR8ED Posted June 13, 2008 Share Posted June 13, 2008 225's with sticky sticky rubber would be a bare minimum. If you don't have rims already, then you might want to look at other options. I can spin my 315's in 1st, 2nd and slightly in 3rd. I'm not talking about clutch dumps here. Hard roll ons to WOT. A nice 245/45/16 would be my personal recomendation, with minor adjustments to the bodywork/ or use with coilovers for no body mods. Anything wide in 17's starts to get pricey, and will require more substantial body/suspension mods. It all depends on how you want to drive the car, and what are your long term goals. Hope to see it out on the roads this summer! Quote Link to comment Share on other sites More sharing options...
fentin_fury Posted June 13, 2008 Share Posted June 13, 2008 i have 245/45/16 on the rear 225/50/16 on the front required rolling the fenders and some pulling. Depending the on the tire - I am using R compounds - this is still slick Q Quote Link to comment Share on other sites More sharing options...
janaka Posted June 13, 2008 Share Posted June 13, 2008 i have 245/45/16 on the rear225/50/16 on the front required rolling the fenders and some pulling. Depending the on the tire - I am using R compounds - this is still slick Q This is exactly what I'm going to run on my LS1 Z, 245's out back and 225's in the front. I still have to roll the fenders when the car gets out of the shop. Quote Link to comment Share on other sites More sharing options...
Evan Purple240zt Posted June 13, 2008 Share Posted June 13, 2008 Width is important, but compound almost more so. I have 265s on my S14 and no hook at all until 3rd or 4th depending on where I am. IMO buy the stickiest tires you can buy, nitto 555R is supposed to be a decent street tire/drag radial that will last awhile. Evn Quote Link to comment Share on other sites More sharing options...
Canadianz Posted June 13, 2008 Author Share Posted June 13, 2008 Thanks for the feed back, that defiantly helps. I really really want a set of Konig Rewinds but unless they can custom make some fat ones for the back I might not. . . I was going to go 7's all around but after getting your feedback and riding in a skyline Im thinking other wise. So basically I need a combo that allows at least 245's or more in the rear ? Quote Link to comment Share on other sites More sharing options...
janaka Posted June 13, 2008 Share Posted June 13, 2008 I just got a set and a half of the XXR 513 rims... 16x8 for daily and 15x8 for drag radials for track use... fairly light all in all, around 16lbs maybe and they are decently wide enough to get some sticky rubber on them (as above (245's for me for daily)... I'll be using MT 235/60/15 Drag Radials at the track which should hook nicely. check them out... these are the 15's. PS like the finish on my garage floor? lol Quote Link to comment Share on other sites More sharing options...
rbs30 Posted June 13, 2008 Share Posted June 13, 2008 I am running 245-40-18's on my RB30det 240z. I originally ran standard yokahamas which had very little traction 1st-2nd-3rd and started to hook up in 4th gear. Now i have put nitto's on and it has made a huge difference. Quote Link to comment Share on other sites More sharing options...
stony Posted June 14, 2008 Share Posted June 14, 2008 Becarefull what you wish for!!!! Lots of HP and traction is not the s30's rearend freind. !!!! Quote Link to comment Share on other sites More sharing options...
Evan Purple240zt Posted June 14, 2008 Share Posted June 14, 2008 I am running 245-40-18's on my RB30det 240z. I originally ran standard yokahamas which had very little traction 1st-2nd-3rd and started to hook up in 4th gear. Now i have put nitto's on and it has made a huge difference. Which nittos did you get? Quote Link to comment Share on other sites More sharing options...
Dragonfly Posted June 14, 2008 Share Posted June 14, 2008 Becarefull what you wish for!!!! Lots of HP and traction is not the s30's rearend freind. !!!! Agree 100%... for street I run 255/50/16 on the back and for drags I run 275/50/15 Nitto 555's. When the tires are cold they spin alot when they are at temp and sticky I break parts. Dragonfly Quote Link to comment Share on other sites More sharing options...
rbs30 Posted June 14, 2008 Share Posted June 14, 2008 Which nittos did you get? NT555's. Not sure how long they will last but they work well for the moment. Quote Link to comment Share on other sites More sharing options...
RIPSNZ Posted June 14, 2008 Share Posted June 14, 2008 16.5 inch wide Hoosiers on a 15 x 12in rim have worked for me, lol no traction problems, in fact to much most of the time Seriously though, a good compound 245/265 would be about right for most street 240s. Rob Quote Link to comment Share on other sites More sharing options...
Canadianz Posted June 14, 2008 Author Share Posted June 14, 2008 Awesome, some really good idea's ... a buddy of mine has an in at Nitto ... Ill ask him about pricing on the 555's Quote Link to comment Share on other sites More sharing options...
1 fast z Posted June 14, 2008 Share Posted June 14, 2008 My car has 620 RWHP, and 500 FT LBS of torque, and I run 315/35/17 R1 BFG's, basicly a groved slick, and it breaks them loose in first and second just rolling on to it, on a 70 degree day! But it is a heck of alot better than the 245 Nittos 555R that I used to run. Quote Link to comment Share on other sites More sharing options...
Racinjitter Posted June 21, 2008 Share Posted June 21, 2008 I have been using 245/40r18 up front for my Z31-rb25det and 275/35r18 out back. In first I get a little spin in first at 13.5psi, but thats about it. Quote Link to comment Share on other sites More sharing options...
Z24O Posted June 21, 2008 Share Posted June 21, 2008 i think a factor often overlooked is the profile of a tyre if you look at a slow motion picture of a drag slick launch you will see the tyre deform elastically into a semi eliptical shape(bit like an oval in a wave motion) this has the effect of increased contact patch as the tyre balloons ahead of itself in contact with the track i do not think that eg 18" rims with very low profile tyres have enough side wall give to allow this effect to occur lowering your tyre pressures really help too as usual a street car is all about compromise,unfortunately drag racing set-up is often in direct conflict with circuit racing requirements....depends what you really want to do best Quote Link to comment Share on other sites More sharing options...
janaka Posted June 21, 2008 Share Posted June 21, 2008 i think a factor often overlooked is the profile of a tyre if you look at a slow motion picture of a drag slick launch you will see the tyre deform elastically into a semi eliptical shape(bit like an oval in a wave motion) this has the effect of increased contact patch as the tyre balloons ahead of itself in contact with the track i do not think that eg 18" rims with very low profile tyres have enough side wall give to allow this effect to occur lowering your tyre pressures really help too as usual a street car is all about compromise,unfortunately drag racing set-up is often in direct conflict with circuit racing requirements....depends what you really want to do best This is why a lot of people downsize rims for track use tires... i have a MUCH larger sidewall for my drag tires (235/60) versus my driver tires (245/45)... more sidewall flex + grippier compound= more traction:) Quote Link to comment Share on other sites More sharing options...
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