modular9 Posted December 3, 2007 Share Posted December 3, 2007 thought I might post a linky I found for tyre and wheel help. Super easy to use and helped work out what tyre size and what the changes would be to your speedo. http://www.carbibles.com/tyre_bible.html On page 2 is the old wheel+tyre combo vs new wheel + tyre combo calculator. Quote Link to comment Share on other sites More sharing options...
Toecutter Posted February 1, 2008 Author Share Posted February 1, 2008 No info on them but I thought these looked nice! Maybe someone knows the brand? Sulio Quote Link to comment Share on other sites More sharing options...
Add Posted February 2, 2008 Share Posted February 2, 2008 I think that they may be SSR's Quote Link to comment Share on other sites More sharing options...
XRQTR Posted February 2, 2008 Share Posted February 2, 2008 Here's also a link to ZE Forged wheels, apparantly available at Jax Quick fit of all places, in case someone wants something like Mark Rosltons current wheels. I must say though the V12 would look way horn in a deep dish me thinks, whereas the Shifter would be a pretty cool resto mod kinda look. http://www.jaxquickfit.com.au/Wheels/zeforged.html# Quote Link to comment Share on other sites More sharing options...
NZeder Posted February 4, 2008 Share Posted February 4, 2008 Ok I have changed my rims I now have some Rota RB-R in 16x8 +10 offset. I will post some pics in the next few days (after I clean the car after this weekends track day) my 240z still has stock spring perches but with lowered springs and they clear (just in the front) with no guard mods required with a 225/45/16. These RIMS will not fit a 260z front without a spacer as the spring perch is 1" lower on the 260z and will fowl on the rim/tyre. However if you have coilovers it might be a different story. Again I will post pics in the next few days. But here is few pics when the car as on axle stands a few week ago. Pic also shows front spring and rear spring clearances. Also the fronts at the time had a 6mm spacer install but they clear without the spacer - I will post a pic of the clearances without the spacer when I take more pics Quote Link to comment Share on other sites More sharing options...
pauly_adams Posted February 5, 2008 Share Posted February 5, 2008 hey all is the offset diferent on a 260z 2+2 to a 2 seater 260, if so what is the maximum positive offset you can use as i found a nice set of rims but they have a +35 offset cheers pauly Quote Link to comment Share on other sites More sharing options...
Toecutter Posted February 5, 2008 Author Share Posted February 5, 2008 Hi Pauly, Thats a typical front wheel drive offset. To make them work you will nedd at minimum a 20mm spacer but even then they might look a bit pox as they will sit far in towards the center of the car to give you that cheese cutter look. You want to have them at about 0 offset from memory and a slight negative would help give it a nice full look. Just to give you some perspective my fronts are a 8.5" wide rim with -6 offset and they could almost fit under the gaurds, (and I'm sure if they were 7.5" wide they would fit nicely with -6!) Sulio Quote Link to comment Share on other sites More sharing options...
NZeder Posted February 6, 2008 Share Posted February 6, 2008 hey all is the offset diferent on a 260z 2+2 to a 2 seater 260, if so what is the maximum positive offset you can use as i found a nice set of rims but they have a +35 offset cheers pauly The max recommended backspace on a 260z with stock spring perches is 4.5" or 114.3mm. To get the backspace you can either measure this (actuate) or you can calculate the approx BS using the offset and the rim specs. To measure the BS you need to a square (one of the builder ones that is adjustable will be best and with a ruler on it too will help alot) and a straight edge. Best to measure with no tyre on the rim then lay the rim on the ground with the face down then lay the straight edge over the back of the rim. Take the adjustable square and use this to get an actuate measure of the mounting face to the straight edge and this is your backspace. To calculate the BS using the offset and rim specs use this as a guide. I will use your +35 offset and assume this will be a 17x7 rim (common sizing these days for these FWD offset rims) Rim = 17x7 Beed to beed width = Rim spec + 1" (the 1" is an approx for JJ rims other are less ie 17x7JJ) so this gives us 8" beed to beed. Working in inches this is how I get the approx BS Backspace = (Rim + 1" for beed to beed)/2 +(offset/25.4) BS = (7+1)/2 +(35/25.4) BS = 8/2 + 1.378 BS = 4 + 1.378 BS = 5.378" BS = 5.378 x 25.4 BS = 136.6mm = way too much = need at least a 20mm spacer maybe more Now if you use Toecutter's rims at 17x8.5 -6 and 17x9.5 -19 here is the BS calculations Fronts = (8.5+1)/2 + (-6/25.4) Fronts = 9.5/2 + -0.236 Fronts = 4.75 - 0.236 Fronts = 4.514" = 114.6mm = ok Rears = (9.5+1)/2 + (-19/25.4) Rears = 10.5/2 + -0.748 Rears = 5.25 - 0.748 Rears = 4.502" = 114.35mm = ok Now a 240z can get away with more BS as the spring perch is in a different location (1" higher up on the fronts the rears are not an issue on both the 240z and 260z and you should be able to fit almost 5" BS with no issues) however I am not sure about 17" rims as I have only checked 15" and 16" rims on my 240z and 260z I hope this helps with understanding BS and offset a little better. Quote Link to comment Share on other sites More sharing options...
pauly_adams Posted February 6, 2008 Share Posted February 6, 2008 yeh i do sort of understand its not rocket science, they would also look quite crap with my gaurds as they have been flared ill just keep looking for a set. do you in your personal opinion think a +15 would be ok cheers pauly Quote Link to comment Share on other sites More sharing options...
Moderators Zedman240® Posted February 6, 2008 Moderators Share Posted February 6, 2008 Just to add, I'm not sure if someone already mentioned it, to avoid using those large bolt on spacers. I've heard they can place a large amount of "leverage" on the stub axle which can cause a lot of stress. Never heard of one breaking but I wouldn't want to be the first. II have to dig up an old email from the mag wheel center in Richmond that sent me a detailed drawing of a wheel for a zed. It had all the dimensions and measurements detailed. Would help anyone wanting to know what would fit.... Andrew_L26 1 Quote Link to comment Share on other sites More sharing options...
NZeder Posted February 6, 2008 Share Posted February 6, 2008 yeh i do sort of understand its not rocket science, they would also look quite crap with my gaurds as they have been flared ill just keep looking for a set. do you in your personal opinion think a +15 would be ok cheers pauly Pauly, you can't just put the offset without let us know the rim width as with a 7" rim +15 will be fine the factory alloys are 5.5" with +18 but +15 on a 8" rim will fowl on the inner guard at full lock and will require coilovers or a small spacer on a 240z but will not fit a 260z but again not sure about 17" but this is the case with 15" and 16". If you have flares you will need a - offset to full them (don't use anything more than a 5-6mm spacer is what I recommend - no spacer is better) I would save the $$ for the rims that will full your guards and give it the look you want don't go for something that is not quite right but the price is right. Depends on how big your flares are but you could visit hybridz and join in on the group buy of the Rota RB-R in 17x 9.5 -19 which is running they will work out about $1300 landed in Oz including taxes I would guess my RB-R 16x8 +10 for the 240z were around $1200 NZD landed all up including taxes. Quote Link to comment Share on other sites More sharing options...
zedevan Posted February 6, 2008 Share Posted February 6, 2008 how do the rota's compare in weight to your watanabes and other rims NZeder? paul it sucks how all the watanabes etc off silvias dont look or fit right on a zed...and then i find you always come across some rims off silvias that have an even lower offset becasue they are wide, but when u work it all out they still wont fit ofcourse ...i could be tempted to sell my rims for the right price to help finance other parts of the car which could help it move again lol Quote Link to comment Share on other sites More sharing options...
pauly_adams Posted February 6, 2008 Share Posted February 6, 2008 i may be tempted to get those rims off you in a couple of weeks can you send me some pics of them to my email (pauly_adams@hotmail.com) . also those rims would be between 7.5 inch and 8 if that helps cheers pauly Quote Link to comment Share on other sites More sharing options...
Toecutter Posted February 6, 2008 Author Share Posted February 6, 2008 Depends on how big your flares are but you could visit hybridz and join in on the group buy of the Rota RB-R in 17x 9.5 -19 which is running they will work out about $1300 landed in Oz including taxes Hey Mike, $1300 landed for all four. Wow, thats pretty cheap. 17x9.5 at the rear would be good, what about the front!? You got a link to that hybridZ thread? Sulio EDIT: ah found it http://forums.hybridz.org/showthread.php?t=123576&highlight=Rota+RB-R Quote Link to comment Share on other sites More sharing options...
Toecutter Posted February 6, 2008 Author Share Posted February 6, 2008 NZeder, just been following that thread. Great looking wheels and unblvble price! It seems they plan to offer 17x9.5" -19 and probably 17x9" -13. Good set up for ZG's with stock perch's/ Some pics of the 17x8.5 Rota RB-R's (not sure of offset) more pics here... http://forums.hybridz.org/showthread.php?t=126343 Wow these would as good as Wats but in 17's at the price of $1300 landed, thats impressive. I'm tempted to get a spare set of wheels like a fashion accessory! Quote Link to comment Share on other sites More sharing options...
Administrators gav240z Posted February 6, 2008 Administrators Share Posted February 6, 2008 Wow these would as good as Wats but in 17's at the price of $1300 landed, thats impressive. I'm tempted to get a spare set of wheels like a fashion accessory! You sound like a woman who has to have that new set of shoes. I do agree with you though, they look wicked and I was eye balling that picture above. Best part is the amount of dish you get with no flares. Since I'm not yet ready to commit to cutting my Z's guards this would be perfect. Especially perfect because they have the Watanabe style without the price tag. Funny thing is I read they are $750 in the US that's only €500 Euro . You know where this is going don't you? Quote Link to comment Share on other sites More sharing options...
Administrators gav240z Posted February 6, 2008 Administrators Share Posted February 6, 2008 Ok I have changed my rims I now have some Rota RB-R in 16x8 +10 offset. I will post some pics in the next few days (after I clean the car after this weekends track day) my 240z still has stock spring perches but with lowered springs and they clear (just in the front) with no guard mods required with a 225/45/16. These RIMS will not fit a 260z front without a spacer as the spring perch is 1" lower on the 260z and will fowl on the rim/tyre. However if you have coilovers it might be a different story. Again I will post pics in the next few days. But here is few pics when the car as on axle stands a few week ago. Pic also shows front spring and rear spring clearances. Also the fronts at the time had a 6mm spacer install but they clear without the spacer - I will post a pic of the clearances without the spacer when I take more pics I love the Black wheels with the orange paint. So early 70's and so suitable to the 240z. Funny thing is I used to dislike black rims, now I absolutely love them. Quote Link to comment Share on other sites More sharing options...
XRQTR Posted February 7, 2008 Share Posted February 7, 2008 Guys I've actually emailed the manufacturers and asked them to include shipping to Aus in their pricing, what I would like to know is how many of you would be interested. Keep in mind that anywhere under $2K is a damm good price for these types of wheels, but everyone has there own budgets of course, I said in my email that there may be a few interested from here to hopefully reduce the costs further otherwise if anyone knows of any shipping companies that may be able to help that might work as well. SO WHO'S IN?? Quote Link to comment Share on other sites More sharing options...
NZeder Posted February 7, 2008 Share Posted February 7, 2008 Ok what did I start Re the question about the weight - that is one of the best parts they are good and light and well made. Mine are the HyperBlack. I am very happy with them here is pic of the from last weekend track time Quote Link to comment Share on other sites More sharing options...
NZeder Posted February 7, 2008 Share Posted February 7, 2008 how do the rota's compare in weight to your watanabes and other rims NZeder? I think they might be lighter than my Watanabes however I am not comparing apples with apples as the Rota's are 16x8 with a 225/45/16 and the watanabes are 16x8.5 with 225/50/16 so there is extra weight in the wider rim and more rubber in the tyre but I would be going my memory of the last time the watanabes had no tyres on I would say they are so close in weight that there would be next to nothing in it Quote Link to comment Share on other sites More sharing options...
mick74 Posted February 7, 2008 Share Posted February 7, 2008 For those that might be interested with the Rota RB I got mine from 18racing 16x7 in the front and 16x8 in the back all with 4mm(+ve) offset they are not the Race version ie RB-R so little bit heavier (7.5kg each) only comes in silver for $975(AUS) shipped to my door (Sydney). I hope this might help? Quote Link to comment Share on other sites More sharing options...
XRQTR Posted February 9, 2008 Share Posted February 9, 2008 Hey Mike, $1300 landed for all four. Wow, thats pretty cheap. Maybe cheaper still I just need to find out whether it's U.S. or Aus Dollars but either way it's much cheaper than that, I'll keep ya'z posted. Quote Link to comment Share on other sites More sharing options...
Add Posted February 10, 2008 Share Posted February 10, 2008 Well I may be interested depending upon the pricing and what sizes (offset and size) are available. Wonder if we can get 17's Quote Link to comment Share on other sites More sharing options...
Toecutter Posted February 10, 2008 Author Share Posted February 10, 2008 From reading the Hybrid Z thread I believe the group buy is based on 17x9.0 -13 for the front and 17x9.5 -19 for the rear. Have'nt checked that thread for a few days, I wonder if they have progressed!? Sulio Quote Link to comment Share on other sites More sharing options...
Add Posted February 14, 2008 Share Posted February 14, 2008 Just finished reading the group buy from hybridz and they are looking at $750 to $950 a set of four in 17X9 and 17x9.5 now thats what you call dish. My main reason for the 17's is purely down to availability in tyre sizes. From what I read rota are making a 17X8.5 in the RB's which I think would be awsome . But I'm looking at the 17x7.5's mainly due to the fact that they wil fit under a stock setup. Here's a link to the rota website, see what you think. http://www.rotawheel.com/rb1.htm Quote Link to comment Share on other sites More sharing options...
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