Toyo R888 pressures - LotusTalk

uglyduck · 06-12-2008, 08:15 AM

I purchased a set of R888 (195 for the front and 235 40R 17 for the rear) from Tire Shoppe and have been running them for a week now. So far, I am very impressed with their wet weather performance and they stick so much better than my warn out AO48s in the dry. I do find that they feel less precise than the AO48. I have not yet played around with tire pressures to see what suites these tires best. Anyone have any experience with street and track pressures for these tires?

Chili Red · 06-12-2008, 08:26 AM

On street I ran 26f 28r cold.

On the track I ran 26f 28r hot. Seem to get the best performance at these pressures.

CCR Elise · 06-12-2008, 08:35 AM

+1 I agree.

uglyduck · 06-12-2008, 08:44 AM

Thanks...I will give that a try. I have been running 28 and 29. What tire temps are you getting on the track?

masheen · 07-05-2008, 09:49 PM

i have been searching for the best pressure and so far have gotten to 31/37 (front/rear) hot. although i can't say that i notice much difference compared to my starting point of 24/29.

i do hear from people who are running these quite high - 40s - on other cars.

in any case, they seem to get slippery when hot. although their sliding is slow and predictable. and my times are not any slower than on a048s.

i was expecting no sliding around and no noise. but i get both. they sort of feel like older a048s except that they don't loose traction abruptly.

they fall short of my high expectations but i still prefer them to a048s because i find them safer and more consistent. and my times are not different.

Bavarian Motorist · 07-05-2008, 09:53 PM

I've been doing 26/29. Seems fine to me, but what do I know?

Chili Red · 07-05-2008, 10:08 PM

I finally worked out 27/29 worked the best for me. The extra pound over 26/28 really seemed to help a bit.

fuse · 07-05-2008, 10:25 PM

I ran my R888 the last weekend at Buttonwillow mostly in the morning when it ranged for high 70-to mid 80 F ambient temperature. I started with 27/29 with some resting time after driving up to BW. After the first session, it was 29/32. It felt ok, but the tires only had about 1200 easy street miles so this would really be its first heat cycle, so I wasn't expecting much. As it got hotter (still really cool for BW) the track got a little greasier, I lowered it 1 lb to 28/31 hot and it was actually noticeably better. For sure the next time out I will try 27/29 hot.

The R888 does not feel like RA1 that I raced with Pro7 or SpecMiata, but then I've never driven RA1 unshaved.

Bavarian Motorist · 07-05-2008, 10:43 PM

The R888s get slippery when hot, so lowering would be smart.

As time goes on, this is less of a problem.

In the cold, there is no comparison.

06-12-2008, 08:15 AM	#1 (permalink)
uglyduck Registered User Join Date: Jun 2005 Location: Toronto Posts: 561	Toyo R888 pressures I purchased a set of R888 (195 for the front and 235 40R 17 for the rear) from Tire Shoppe and have been running them for a week now. So far, I am very impressed with their wet weather performance and they stick so much better than my warn out AO48s in the dry. I do find that they feel less precise than the AO48. I have not yet played around with tire pressures to see what suites these tires best. Anyone have any experience with street and track pressures for these tires? __________________ 2006 Tripoint SC with 10psi pulley and Aquamist, custom 2.5" free flowexhaust, FF headers, Decat, Ohlin's, track brace, custom carbon bits 1994 Caterham 7, R400 zetec conversion in progress

06-12-2008, 08:26 AM	#2 (permalink)
Chili Red Registered User Join Date: Dec 2006 Location: Houston, Tx Posts: 1,609	On street I ran 26f 28r cold. On the track I ran 26f 28r hot. Seem to get the best performance at these pressures. __________________ 2007 Exige S - Chili Red 2009 Mini Cooper S - Chili Red Gotham 265, Nitron Sport Pro, Moroso oil pan, RTVBrace, Volk CE28N/R888, Cup Wheels/A048, 2Bular Ultra 4", Rapfix II w/ Sparco P300, S111 CF Splitter, Ultradiscs, Pagid RS42, V-Force Harness Bar, Schroth PROFI II, Fire Extinguisher, Folding Tow Hook, Odyssey PC680, re-ENFORCER, LLumar 30% tint, Traqmate, DashDAQ, Chasecam, Alpine IVA-D100 w/ Backup Camera.

06-12-2008, 08:44 AM	#4 (permalink)
uglyduck Registered User Join Date: Jun 2005 Location: Toronto Posts: 561	Thanks...I will give that a try. I have been running 28 and 29. What tire temps are you getting on the track? __________________ 2006 Tripoint SC with 10psi pulley and Aquamist, custom 2.5" free flowexhaust, FF headers, Decat, Ohlin's, track brace, custom carbon bits 1994 Caterham 7, R400 zetec conversion in progress

07-05-2008, 09:53 PM	#6 (permalink)
Bavarian Motorist Live to Drive Join Date: Nov 2006 Location: Rye, NY Posts: 8,387	I've been doing 26/29. Seems fine to me, but what do I know? __________________ Driving a Lotus Exige with sticky... performance tires on icy roads or in standing water is about as much fun as walking a high wire treated with WD-40 - Car & Driver BWR supercharged... I suppose I "got the power" now??

07-05-2008, 10:08 PM	#7 (permalink)
Chili Red Registered User Join Date: Dec 2006 Location: Houston, Tx Posts: 1,609	I finally worked out 27/29 worked the best for me. The extra pound over 26/28 really seemed to help a bit. __________________ 2007 Exige S - Chili Red 2009 Mini Cooper S - Chili Red Gotham 265, Nitron Sport Pro, Moroso oil pan, RTVBrace, Volk CE28N/R888, Cup Wheels/A048, 2Bular Ultra 4", Rapfix II w/ Sparco P300, S111 CF Splitter, Ultradiscs, Pagid RS42, V-Force Harness Bar, Schroth PROFI II, Fire Extinguisher, Folding Tow Hook, Odyssey PC680, re-ENFORCER, LLumar 30% tint, Traqmate, DashDAQ, Chasecam, Alpine IVA-D100 w/ Backup Camera.

06-12-2008, 08:35 AM	#3 (permalink)
CCR Elise Registered User Join Date: Mar 2007 Location: Macon, GA Posts: 244	+1 I agree.

07-05-2008, 09:49 PM	#5 (permalink)
masheen Registered User Join Date: Aug 2004 Location: Detroit, MI Posts: 680	i have been searching for the best pressure and so far have gotten to 31/37 (front/rear) hot. although i can't say that i notice much difference compared to my starting point of 24/29. i do hear from people who are running these quite high - 40s - on other cars. in any case, they seem to get slippery when hot. although their sliding is slow and predictable. and my times are not any slower than on a048s. i was expecting no sliding around and no noise. but i get both. they sort of feel like older a048s except that they don't loose traction abruptly. they fall short of my high expectations but i still prefer them to a048s because i find them safer and more consistent. and my times are not different.

07-05-2008, 10:25 PM	#8 (permalink)
fuse Registered User Join Date: Jul 2007 Posts: 80	I ran my R888 the last weekend at Buttonwillow mostly in the morning when it ranged for high 70-to mid 80 F ambient temperature. I started with 27/29 with some resting time after driving up to BW. After the first session, it was 29/32. It felt ok, but the tires only had about 1200 easy street miles so this would really be its first heat cycle, so I wasn't expecting much. As it got hotter (still really cool for BW) the track got a little greasier, I lowered it 1 lb to 28/31 hot and it was actually noticeably better. For sure the next time out I will try 27/29 hot. The R888 does not feel like RA1 that I raced with Pro7 or SpecMiata, but then I've never driven RA1 unshaved.

07-05-2008, 10:43 PM	#9 (permalink)
Bavarian Motorist Live to Drive Join Date: Nov 2006 Location: Rye, NY Posts: 8,387	The R888s get slippery when hot, so lowering would be smart. As time goes on, this is less of a problem. In the cold, there is no comparison. __________________ Driving a Lotus Exige with sticky... performance tires on icy roads or in standing water is about as much fun as walking a high wire treated with WD-40 - Car & Driver BWR supercharged... I suppose I "got the power" now??

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