Best fuchs width for toyo r888/ra1?

[gliding_serpent]

Hi guys. I like to take my cars to hpde and the odd autocross. I have an 84 911 on the way with the typical tasteful engine/suspension upgrades. I have a new set of bridgestone re-11a's 205/55/16 and 225/50/16 rears on 6 and 7 fuchs for the street/track.

I also have a set of 225/50/16 and 245/45/16 ra1's from the previous owner that he used for hpde/autocross on the 6/7 fuchs. Both widths are minimum factory advised widths, but the owner said they work fine.

I wanted 7/8x16, but they are pricy for a track tire, and street tire choice is non-existent for those sizes in canada.

In the end i am leaning for a second set of 6/7 fuchs. Anyone else run r comp toyos 225/245 on these? Is there too much squirm? Is the saved weight worth it compared to wider tires?

Not interested in 15's as i can't get the desired rear widths in that size.

[msterling]

Maybe look for a set of BBS rims in 16x7 and 8 or 9. They can be had for a decent price and are plenty light and strong for the track. The 6 and 7 Fuchs can't be optimum for those tire sizes.

You could mount the tires on your current wheels and test them out yourself.

[gliding_serpent]

Well those widths (6/7) are accepted for the above 225/245 toyos as per spec. I guess the question is, is the reduced unsprung weight worth the extra squirm?

I guess i will find out soon enough.

[rdrr]

Actually I believe Toyo specifies a minimum 7.5" width for the 245. See link:

http://toyotires.com.au/images/tyres/factsheet/pdf/proxesr888.pdf

I used to run those sizes on 7+8, and now run them on 8+9 inch wheels. In my opinion they are much better on the wider rim.

[gliding_serpent]

Originally Posted by rdrr

Actually I believe Toyo specifies a minimum 7.5" width for the 245. See link:

http://toyotires.com.au/images/tyres/factsheet/pdf/proxesr888.pdf

I used to run those sizes on 7+8, and now run them on 8+9 inch wheels. In my opinion they are much better on the wider rim.

what6 was the improvement on the wider rim? thank for the catch on the rears. RA1's hhave that same guidelines, but R888's are what I will have available to me down the road.

[rdrr]

It is hard to say, as it is all very subjective, but for me, the improvement seems mainly in the following areas:

1. Turn-in seems more precise
2. Mid-corner the car seems just a bit more 'set' - more stable, composed and predictable on limit.

With the same suspension settings, I got much better heat distribution on the tyres. More consistent heat across the tread means more grip and even wear. One the narrower rims, the outer edges would wear significantly faster than the rest of the tyre. I've been running the wider rims only for a few events so far, but wear seems to be more even.

Overall, I just feel more confident with the car. I would definitely do it again.

A friend of mine made the same change late last year. He felt a huge improvement and thought that it felt like a different car. Very confidence inspiring, and just much nicer to drive through corners. He was running the same sizes, but using the Hankook twin-groove tyre.

[Bill Verburg]

Originally Posted by gliding_serpent

Hi guys. I like to take my cars to hpde and the odd autocross. I have an 84 911 on the way with the typical tasteful engine/suspension upgrades. I have a new set of bridgestone re-11a's 205/55/16 and 225/50/16 rears on 6 and 7 fuchs for the street/track.

I also have a set of 225/50/16 and 245/45/16 ra1's from the previous owner that he used for hpde/autocross on the 6/7 fuchs. Both widths are minimum factory advised widths, but the owner said they work fine.

I wanted 7/8x16, but they are pricy for a track tire, and street tire choice is non-existent for those sizes in canada.

In the end i am leaning for a second set of 6/7 fuchs. Anyone else run r comp toyos 225/245 on these? Is there too much squirm? Is the saved weight worth it compared to wider tires?

Not interested in 15's as i can't get the desired rear widths in that size.

for 225/50 x16 ans 245/45 x16 RA1 min wheel widths are 6 & 7.5 max are 8 & 9

to get the most performance from a tire you want the widest wheel that fits

Your goal is 8ET25-30 and 9ET12-15, the usual Fuchs 8ET23.3 from a 944 can be used though it's ET is less than optimal for easy fitment, the 930 Fuchs 9x16 is perfect.

If you can't swing those wheels try to get as close as you can.

[pgeorgeson]

For reference, and what it is worth, the Spec911 class mandates 7's and 8's with 225s and 245s respectively. As noted above, you can pick up BBS wheels in that size for a lot cheaper than the Fuchs.

[gliding_serpent]

For reference, and what it is worth, the Spec911 class mandates 7's and 8's with 225s and 245s respectively. As noted above, you can pick up BBS wheels in that size for a lot cheaper than the Fuchs.

I got some 7/8 bbs rs wheels with 23mm front and 11mm rear offset, so this is a bit of s non issue. Prio owner said the 6/7's were fine, but as mentioned, prob not ideal despite a few lbs or unsprung weight saved.

[vinceparts]

Heres mine on 116x7 and 16x8 fuchs no spacers. TOYO R888 225/45 245/45

I believe these are the best size for the rims.