40 or 45??

MiVEC · Post by **MiVEC** » Sat Aug 16, 2003 3:09 am

hi guys, i want to buy a 17" alloy for my gpx. should i use tyre with profile 40 or 45? thanks...

GPXXX · Post by **GPXXX** » Sat Aug 16, 2003 3:26 am

i use 45-series profile on my 17x8 and it has no effect on speedo reading whatsoever. if you go lower, the speedo may be out by a couple of k's due to the reduced rolling diameter.

Hez · Post by **Hez** » Sat Aug 16, 2003 11:16 am

i have 40 and its bumpy!

Jono · Post by **Jono** » Sat Aug 16, 2003 12:05 pm

i have 40's
and teins

now thats bumpy!

jono

Hez · Post by **Hez** » Sat Aug 16, 2003 12:51 pm

40s and hks springs

MiVEC · Post by **MiVEC** » Sat Aug 16, 2003 1:31 pm

thanks guys, i'll get the 40. do you know how much approx. for 17"*7.5 with 215/40??

Jeff · Post by **Jeff** » Sat Aug 16, 2003 2:37 pm

Which brand of tyres would anyone recomend. I read elsewhere the Falkens were good. But a tyre guy was telling me they are crap in the wet.
He wanted to sell me Yokohamas AVS V102 215/45 7.
Are these as good as he says?
Jeff

Hez · Post by **Hez** » Sat Aug 16, 2003 4:35 pm

anything different to 205/50r16 would have + or - in speedo reading. 215/40r17 would be "69.13mph when speedo reads 70mph"

GPXXX · Post by **GPXXX** » Sat Aug 16, 2003 7:32 pm

yeh 40-series would be quite bumpy... hell i got 45-series on mine and it's already very bumpy for me (with stock shocks and Prof sport springs). at the end of the day, the ride quality will depend very much on the shock/springs, but in terms of looks an 18" rim would look great on a 40-series profile

G_A_V · Post by **G_A_V** » Sat Aug 16, 2003 8:03 pm

i just picked up a set of falkens, andthey are ok, cept in the wet ithe wheels spin heaps, i was spinnin through 2nd and didnt evennotic till i put my foot downand the wheels spun at over 100kmh and i wasnt moving! i used to usedunlop formulas, it was reccomended to me,andthey grip really well,but i gothrough a set every month. there doesnt seem to be a happy median

GPXXX · Post by **GPXXX** » Sat Aug 16, 2003 9:20 pm

Switching to Bridgestone G3s is the smartest move i've done to my car... it has excellent grip in wet or dry conditions and very good balance between road noise and wear.

I've used Falkens many times before and yes although they grip very well in dry, it's just hopeless in the wet... I've tried Dunlops before and quite frankly, i can't afford to change tyres every 25000kms (and this was fitted on a Lancer PoS too by the way).

rxboy · Post by **rxboy** » Sun Aug 17, 2003 2:30 pm

I drive on Bridgestone Potenza GIIIs too

Their grip is excellent, even in the wet. I was advised against Falkens because they are crap in the wet.

Those Melbournians out there should know the famous S bend of Princess Highway underneath the train tracks next to Caulfield station. That's a very good place to test your tires

Disclaimer: i don't recommend u doing it with all 3 lanes full of cars.

As for 40 or 45 profiles.... I drive on 45s and there has been a small loss in drive comfort compared to the stock 50s. 40s are too thin if u have anything smaller than 18" wheels. There would be an unsightly gap between the wheels and the arches, unless u lower your ride.

MADFTO · Post by **MADFTO** » Sun Aug 17, 2003 4:24 pm

Errr, I don't think falken's are crap in the wet, but I don't have anything to benchmark them against =)

I can do a fair bit with them without them stepping out . . . but then again I've never been to a race and actually tried to make them lose grip, but for street they seem fine to me *shrugs*

Guess I should try other Semi-comp tyres at some point =)

GPXXX · Post by **GPXXX** » Sun Aug 17, 2003 7:39 pm

MADFTO wrote:Errr, I don't think falken's are crap in the wet, but I don't have anything to benchmark them against =)

I can do a fair bit with them without them stepping out . . . but then again I've never been to a race and actually tried to make them lose grip, but for street they seem fine to me *shrugs*

Guess I should try other Semi-comp tyres at some point =)

dude, i thought you had Falken Azenis semi-slicks fitted on your FTO? i guess i should've mentioned that the Falken tyres I was talking about were the GRBs and ZE502s... compared to what I'm running on now, the GRBs and ZE502s are hopeless but never tried the Azenis though... might give them a go during track days sometime...

MADFTO · Post by **MADFTO** » Sun Aug 17, 2003 10:07 pm

*nods* I do have azenis =)

I've had GRB in the past (Both Tune 1 and 2)

They aren't bad either, but they won't hold up against azenis =)

I guess you get waht you pay for =)

G1 · Post by G1 » Mon Aug 18, 2003 4:34 pm

i have falken firenza st-03s at the moment, they are not actually marketted for australia, but for US i think...

they are made in japan, they grip very well and have very low noise
i havent pushed them in the wet though... i always drive carefully in the rain... but thats just me.... they do spin on a wet, uphill start on uneven roads but then which tyre doesnt??

for $130 (for the stock rims) a tyre who can complain.

GPXXX · Post by **GPXXX** » Mon Aug 18, 2003 6:36 pm

i think we're starting to get a little off-topic with the way this thread is heading... it's supposed to be a discussion about 40-series or 45-series profile, not which is the best tyre... hahahaha...

MADFTO · Post by **MADFTO** » Mon Aug 18, 2003 8:00 pm

I'd prefer 40s . . .
I'd rather have my speedo report higher than actual than lower =PPP

salacious · Post by **salacious** » Mon Aug 18, 2003 9:27 pm

I have 215/40R17 on 17x8" alloys. I have noticed on some people's websites that they say they have 225/40. I have never found a tyre manufacturer making these tyres, or is it typos on the websites.

Brian