AshbyJoe Posted June 6, 2016 Share Posted June 6, 2016 Hi, I've just fitted some 19" alloys all with 245/40/19 tyres. I've noticed my slip light flashing when I'm definitely not slipping. I've done some searching and it tends to be wrong size tyres, is this the case? Apologies if the answer is already out there. Thanks, Joe Quote Link to comment Share on other sites More sharing options...
StevoD Posted June 6, 2016 Share Posted June 6, 2016 More than likely, also if tyres are brand new they will be a bit slippery till worn in. Quote Link to comment Share on other sites More sharing options...
GMballistic Posted June 6, 2016 Share Posted June 6, 2016 So you're not running a staggered set up anymore then? I used to run 19's on my old Zed ~ front 245/35/19 and rear 275/35/19 ~ never had any slip light issues. I'm guessing it will be down to a combination of not running the staggered set up & possible the higher profile although the latter may not be the problem. Quote Link to comment Share on other sites More sharing options...
roadtrip Posted June 6, 2016 Share Posted June 6, 2016 The G35 tyre sizes of 225/40R19 front with 245/40R19 rear are known to work without issues so that could be a good option. If you want wider then the sizes GMballistic suggested are the most common. It really depends on your wheel widths and offsets though. Quote Link to comment Share on other sites More sharing options...
AshbyJoe Posted June 6, 2016 Author Share Posted June 6, 2016 I had them off a member on the forum, he had them on his Zed previously so I just assumed the sizing would be okay. The fronts are in need of changing which I'm doing tomorrow, but the rears have good tread. Maybe staggering the sizes will nip it in the bud. Quote Link to comment Share on other sites More sharing options...
roadtrip Posted June 6, 2016 Share Posted June 6, 2016 245/40R19 is the standard size for the front on a 370Z so you could sell on the good pair? Quote Link to comment Share on other sites More sharing options...
GMballistic Posted June 6, 2016 Share Posted June 6, 2016 I had them off a member on the forum, he had them on his Zed previously so I just assumed the sizing would be okay. The fronts are in need of changing which I'm doing tomorrow, but the rears have good tread. Maybe staggering the sizes will nip it in the bud. Do you know.... Are the alloys the same width? (E.g. 9J) Are the alloys the same offset? (E.g. ET20) If so then why not put alloys with the decent tread on the front and then change the rears to a wider tyre like a 265 or 275 width? This is of course providing that the alloy width & offset will allow for the wider tyre on the rear without any rubbing on the arches. For example, my old alloys which were Rotas had an offset of ET20 both front & rear. The front alloys running the 245/35/19 tyres were 9.5J whereas the rear alloys running the 275/35/19 tyres were 10.5J. This set up was on a standard height 2003 350Z and caused no slip issues or rubbing issues. I think not having a staggered set up is most likely your problem. 1 Quote Link to comment Share on other sites More sharing options...
AshbyJoe Posted June 6, 2016 Author Share Posted June 6, 2016 I've just checked they are all 8.0jj. I do believe ET40. Apologies I'm not too clued up on tyre sizes🙈 What would you recommend ideally keeping the two 245/40s? Thanks Quote Link to comment Share on other sites More sharing options...
roadtrip Posted June 6, 2016 Share Posted June 6, 2016 (edited) I've just checked they are all 8.0jj. I do believe ET40. Apologies I'm not too clued up on tyre sizes������ What would you recommend ideally keeping the two 245/40s? Thanks Definitely put the 245/40 on the back and get some new 225/40 for the front. You can't go any wider really. I'm surprised those fit due to the high offset, I assume you're running spacers front and rear? Edited June 6, 2016 by roadtrip Quote Link to comment Share on other sites More sharing options...
AshbyJoe Posted June 6, 2016 Author Share Posted June 6, 2016 Okay thanks, I'll get the 225s tomorrow instead of the 245s. I've not actually got an spacers on them, i asked him if they were required and he said he ran as standard. Would it be noticeable that I need them? Quote Link to comment Share on other sites More sharing options...
GMballistic Posted June 6, 2016 Share Posted June 6, 2016 Definitely put the 245/40 on the back and get some new 225/40 for the front. You can't go any wider really. ^^ That maybe your only sensible option. I think on an 8J rim size 245 is about the maximum width you could fit or would want to fit safely. See here: http://www.tyresizecalculator.com/charts/tire-width-for-a-wheel-rim-size-chart 350Z wheel specs for OEM alloys: http://www.350z-tech.com/wiki/index.php?title=Wheel_Specifications Some other tyre related calculators: http://www.willtheyfit.com/index.php?width=225&aspect=45&diameter=18&wheelwidth=8.0&offset=30&width2=245&aspect2=40&diameter2=19&wheelwidth2=8.00&offset2=40&Submit=Calculate#content http://www.rimsntires.com/specspro.jsp Quote Link to comment Share on other sites More sharing options...
roadtrip Posted June 6, 2016 Share Posted June 6, 2016 Okay thanks, I'll get the 225s tomorrow instead of the 245s. I've not actually got an spacers on them, i asked him if they were required and he said he ran as standard. Would it be noticeable that I need them? As long as the wheels aren't causing problems with your brakes or suspension then you don't need spacers. They will certainly look 100% better if you had some spacers on there though. Quote Link to comment Share on other sites More sharing options...
AshbyJoe Posted June 6, 2016 Author Share Posted June 6, 2016 That's some great info, thanks for your help guys, looks like I'll be having some 225s fitted on the front tomorrow instead and I'll have a look into the spacers. Thanks again gents👠Quote Link to comment Share on other sites More sharing options...
roadtrip Posted June 6, 2016 Share Posted June 6, 2016 If it was me I'd get 20mm spacers on the front and 25mm on the rear which are common sizes for the 350Z and should be easy to find. 30mm front, 35mm rear might look even better but are more tricky to find. Quote Link to comment Share on other sites More sharing options...
KyleR Posted June 7, 2016 Share Posted June 7, 2016 What wheels are these? 8" wide seems very thin for a 19" wheel. Are all 4 tyres the same size or only the rears? Quote Link to comment Share on other sites More sharing options...
AshbyJoe Posted June 7, 2016 Author Share Posted June 7, 2016 They're Zito brand, similar looking to the Rays. When I bought them all tyres were 245/40/19 Quote Link to comment Share on other sites More sharing options...
roadtrip Posted June 7, 2016 Share Posted June 7, 2016 I'm guessing they're these Zito Navarro: 4 x 19 inch black Zito wheels & CF Hood *for sale* Quote Link to comment Share on other sites More sharing options...
KyleR Posted June 7, 2016 Share Posted June 7, 2016 They're Zito brand, similar looking to the Rays. When I bought them all tyres were 245/40/19 Then all the tyres are the wrong size. Maybe the previous owner was constantly driving with the traction control off. If I was you, I'd try to flog them off to someone who could use a square set up and the weak offsets would fit they're car better. Alternatively, buy 4 new tyres of the correct sizes - 245/35/19 and 275/35/19. Quote Link to comment Share on other sites More sharing options...
ShortPaul Posted August 10, 2016 Share Posted August 10, 2016 Hi bud has the diameter of your wheels changed,this can cause problems with traction control,I am running 20 inch with 35mm profile with no problems Quote Link to comment Share on other sites More sharing options...
valy Posted August 10, 2016 Share Posted August 10, 2016 Hi Joe,just saw your thread now...I have used those wheels for 3 months when I bought the Zed last August and without any issues. I know is not a great set up hence the fact I changed them and bought some better ones and that is why I let them go for that low price. I suspect is something else as I never turned off my traction control and had no slip light come on unless it was wet outdoors and I was stepping it a bit... Quote Link to comment Share on other sites More sharing options...
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