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Tire size question: what width GS-D3's for 8.5" wheels?

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Old 02-06-2006, 09:48 AM
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Default Tire size question: what width GS-D3's for 8.5" wheels?

Time to order summer tires; after much STFA'ing, going with the Goodyears. On the Falkens I had last season, fitment was fine, almost no rubbing. I read here that GYs run a little wide, and that Falkens run narrow, but the manufacturer specs don't seem to indicate that:

ST115 235/40/18's (old setup):
25.3"-dia
9.6"-section width
8.3" tread width

GS-DS 225/40/18
25.1"-dia
9.0"-section width
7.7" tread width

GS-DS 235/40/18
25.4"-dia
9.5"-section width
8.1" tread width

GS-DS 245/35/18
24.7"-dia
9.7"-section width
8.2" tread width

So, WWAWD?

My ride setup:

18"x8.5" ET35 RX-II's
Ride height ~25.25"
Moderately rolled fenders
Street only for now
Old 02-06-2006, 09:52 AM
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LCP
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Default 235's. I have 235's on my 8" rims and they just barely afford some rim protection...

...you'll have less with 8.5" rims and "negative" rim protection with 225's on an 8.5" rim. Of course, you may need some fender rolling, and if you drive over bumps in the road too fast so that your suspension compresses too much, they might still rub a bit, but that's not the end of the world occasionally.
Old 02-06-2006, 09:53 AM
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Default Retake: if you're that low (25.25") I bet you'll be rubbing frequently with 235's...

...if you weren't so low you could get a wider tire.
Old 02-06-2006, 10:08 AM
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Default According to Goodyear: "exterior sidewall rim flange protectors help guard wheels from curb damage."

Was that written by the marketing department?
Old 02-06-2006, 10:10 AM
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Default Well, I'm not averse to raising my ride height a little. Still, based on the specs...

it seems that I should have a bit more clearance with the 235's compared to the Falkens, and that the 245's would be just 0.1" wider, while being closer to stock diameter.
Old 02-06-2006, 10:16 AM
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They don't run wide.
Old 02-06-2006, 10:22 AM
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Default

Yep, 8.5" for the 235's and 245's. The 225's measuring rim was 8".
Old 02-06-2006, 10:36 AM
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2nd. My S03s had true rim protection. My GS-D3s do not.
Old 02-06-2006, 10:39 AM
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Default Bah, my GS-D3's, to my relief, have saved me from quite a few nasty brushes with curbs...

...I think they afford the best rim protection of any tire I've had on my S4.
Old 02-06-2006, 10:49 AM
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Default <confused> OK, do they "just barely afford some rim protection" or provide "the best rim

protection of any tire [you've] had..." I guess you're saying that your previous tires had no rim protection...

So, are there "rim flange protectors" or not? If not, maybe I should get 245's for better protection on 8.5" wheels.


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