225/35/18?? - Mazda 6 Forums : Mazda 6 / Mazda Atenza Forum

pobody · 07-25-2006, 11:29 PM

So I am looking at buying some used wheels and tires (the wheels are what I am really after, but he won't separate) and the tires that come with the wheels are Toyo Proxes FZ4 in a 225/35/18.

Is running a 35 tire a bad idea? If I were to buy new it would be either a 40 or 45 but if this will work I will use them until I need to buy new tires.

Does anybody use that size and if so how is the ride?

Thanks for any info or input!

HighSpeed6 · 07-25-2006, 11:40 PM

Well, according to Toyoguy these are the correct tire size choices for an 18" rim.

215/45R18 7.0"-8.0" 32 psi *original equipment size*
225/40R18 7.5"-9.0" 38 psi
225/45R18 7.0"-8.5" 32 psi
235/40R18 8.0"-9.5" 33 psi
245/40R18 8.0"-9.5" 32 psi

Your load index must be greater than 91, otherwise it's dangerous to run a tire under that rating, so it is a bad idea. Your tire will def be under that 91 mark, so your going to have to jack up the PSI. I tried looking for your tires load rating on Toyo's site but I couldn't find it, the only sizes in 18" they have listed with specs are 225/40, 245/40, and 215/35. Be safe and buy a new set of tires. You don't want to see a rim getting bent, or worse a tire blowing out!

dabears2k · 07-25-2006, 11:44 PM

additionally, your speedo will be off by a bunch

HawaiianEagle · 07-26-2006, 03:40 AM

225 40 18 is the norm for 18x7.5 that wheel size/tire size seems to be the most popular.... plus your thank your self for the 40 series sidewall the first time you rack a big bump...

Tire Guy · 07-28-2006, 12:06 AM

Sent pm to pobody, but for the board, 225/35R18 as stated by others is not a good idea.

pobody · 07-28-2006, 12:59 AM

yes, thanks to all for replying. I ended up not buying the wheels and tires mainly because it was going to be to big of a hassel. I had a pretty good idea that I shouldn't buy with those tires, but just had to make sure...

07-25-2006, 11:29 PM	#1 (permalink)
pobody Track Racer Join Date: Jun 2004 Location: Gig Harbor,WA Posts: 799 Thanks: 0 Thanked 0 Times in 0 Posts Groans: 0 Groaned at 0 Times in 0 Posts iTrader: 0 reviews	So I am looking at buying some used wheels and tires (the wheels are what I am really after, but he won't separate) and the tires that come with the wheels are Toyo Proxes FZ4 in a 225/35/18. Is running a 35 tire a bad idea? If I were to buy new it would be either a 40 or 45 but if this will work I will use them until I need to buy new tires. Does anybody use that size and if so how is the ride? Thanks for any info or input! __________________ Worker bees can leave Even drones can fly away The queen is their slave

07-25-2006, 11:40 PM	#2 (permalink)
HighSpeed6 Mazda Guru Join Date: Aug 2005 Location: Monroe Township, NJ Posts: 3,179 Thanks: 0 Thanked 0 Times in 0 Posts Groans: 0 Groaned at 0 Times in 0 Posts iTrader: 0 reviews	Well, according to Toyoguy these are the correct tire size choices for an 18" rim. 215/45R18 7.0"-8.0" 32 psi original equipment size 225/40R18 7.5"-9.0" 38 psi 225/45R18 7.0"-8.5" 32 psi 235/40R18 8.0"-9.5" 33 psi 245/40R18 8.0"-9.5" 32 psi Your load index must be greater than 91, otherwise it's dangerous to run a tire under that rating, so it is a bad idea. Your tire will def be under that 91 mark, so your going to have to jack up the PSI. I tried looking for your tires load rating on Toyo's site but I couldn't find it, the only sizes in 18" they have listed with specs are 225/40, 245/40, and 215/35. Be safe and buy a new set of tires. You don't want to see a rim getting bent, or worse a tire blowing out! __________________ \|05' Steel Grey 6s MTX Hatch.\|206HP\|\|204TQ\|14.923 @ 94.31\|

07-25-2006, 11:44 PM	#3 (permalink)
dabears2k Mazda Guru Join Date: Nov 2004 Location: San Diego, CA Posts: 4,784 Thanks: 0 Thanked 0 Times in 0 Posts Groans: 0 Groaned at 0 Times in 0 Posts iTrader: 0 reviews	additionally, your speedo will be off by a bunch __________________ Kriegsfeld.com Blog "We have no words for speaking of wisdom to the stupid. He who understands the wise is wise already." -G.C. Lichtenberg

07-26-2006, 03:40 AM	#4 (permalink)
HawaiianEagle Track Racer Join Date: Aug 2005 Location: Hawaii Posts: 924 Thanks: 0 Thanked 0 Times in 0 Posts Groans: 0 Groaned at 0 Times in 0 Posts iTrader: 0 reviews	225 40 18 is the norm for 18x7.5 that wheel size/tire size seems to be the most popular.... plus your thank your self for the 40 series sidewall the first time you rack a big bump... __________________ 2005 Mazda 6i Steel Grey - Magnaflow Catback, Airbox Mod, more to come [x] Cat Back Exhaust [x] Cold Air Intake [x] Non Sport Appearance Package [x] TEIN S-Techs [x] Nex-O M-20's 18x7.5 w/ Yokohama AVS ES100's [ ] Vibrant Header 1991 Eagle Talon TSi AWD - 11.467 @ 121.460 MPH stroked + GT42R [x]DONE!!!

07-28-2006, 12:59 AM	#6 (permalink)
pobody Track Racer Join Date: Jun 2004 Location: Gig Harbor,WA Posts: 799 Thanks: 0 Thanked 0 Times in 0 Posts Groans: 0 Groaned at 0 Times in 0 Posts iTrader: 0 reviews	yes, thanks to all for replying. I ended up not buying the wheels and tires mainly because it was going to be to big of a hassel. I had a pretty good idea that I shouldn't buy with those tires, but just had to make sure... __________________ Worker bees can leave Even drones can fly away The queen is their slave

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