s1 dean

got new 17'' 7.5j rs 7's soft spokes but not sure what tyre size to go for on a 2wd saff any help would be appreciated

cheers

Sideways_Sierra

i run 215 40 17 on mine

KSA-Cossie

iTrader: (4)

As above m8.

nuttynil

iTrader: (3)

hi i run 235/35/17 on the rear 215/35/17 on the front i think it gives a good stance ......

series1rscars

I have a set of 215/40/17 michilen pilot's, done 50 miles, cost Ł544 for the tyres + Fitting & Balance. Still have knobbles & the the little michilen man on the side of the tread pattern. As new, under half price Ł250


Here they are fitted to my ronnies, just a bit to close to my arches so going to change to 205's

cossiegreg1

any pics?
i have 215/40/17 all round on my rs 7 spokes. front arches used to catch slightly .my car is lowered though.

s1 dean

235's on the rear blimey!!! do they rub at all?

thanks for the help guys

Jasesapphy

iTrader: (1)

i ran 235s no problem, and 225 on the front

cossiegreg1

what did it drive like with 225 on front? i heard sapph's drive better with 205 on front anything more makes them tramline. view's??

nuttynil

iTrader: (3)

No the rears dont rub at all they are ok using yokohama a510s

rapidcossie

is the car lowered?

Ridgey

iTrader: (5)

Looking at getting 225/35 all round on some new 8" wheels myself.

DAN P

iTrader: (1)

235 on back 215 on front

autonero

I'm running 205/45/17 on low-suspension. Doesn't touch anything.
215/40/17 felt a bit too low for my country's roads



I also want to fit spacers for rear wheel. Anyone who fitted, what size should I use?


Rims: focus st170, 7Jx17, 15 spokes[/img]

Remko GT

According to the math, 215/40 are less prone to tramlining than 205/40 because the tyre is higher than a 205/40, not lower. (0.4 x 215 = 86 and 0.4 x 205 = 82)

Ridgey

iTrader: (5)

So its low profile that induces tramlining rather than width ?

bud-weis

it's hard to say what the perfect size is without knowing how low the car is and what make of tyres you want.

for instance; 215/40/17 yoko paradas are wider than a 225 toyo proxie. different makes of tyres are different sizes in reality

when i first bought my old saff it had 245/35/17's on the rear and 215/40 on the front...never rubbed at all.

215 is probably the most common all round tyre to use to avoid catching etc..

autonero

Yes, but thats why I choose 205/45. Cose its 92.2

cossiegreg1

didnt know that..
i have 215/40/17 on front and there yoko pradas.

Remko GT

Ofcourse wider tyres are more sensible to tramlining but low profile tyres are far worse because the sidewalls can't flex anymore.
Imagine having 15" wheels. Standard on Cossie is 205/50 yeah?
Still, they don't tramline (well, at least not as much as low-profile tyres) Now compare them to 17" 205/40. Same width but far more rigid so no flex in the sidewalls of the tyres.

Tbh, I also wasn't aware that there is a significant width difference between different tyrebrands. Must be like shoes.

I can see why you'd take 205/45 but I've heard a lot of ppl with lowered Sierra's get shock clearance issues (ofcourse this also depends on the ET value of the wheel) or arch clearance issues. Also, the circumference of the 205/45 isn't to Sierra specs so your speedo will be off.

TurboShed

OMG I've got 215/40 and have clearance probs with front shock platforms, am going coilovers on the front to try to fix this.

Remko GT

That's quite common. You could try a spacer but I understand the tyre is hitting the bottom where the spring sits? Then it's probably no use. Best solution then is indeed coil-overs. Expensive solution though.

silky16v

iTrader: (1)

215/40/17 Avon ZZ3 all round on my Softline alloys with a Avo -25mm drop handled like a dream and no arch issues